SS OU Need advice for my team(Newbie)

[iluvpotato]

Hi everyone, I've always been a fan of pokemon but never really played competitively, and my understanding of the metagame is not that good. I've always been watching through the forums/OU lists and moveset recommendations of individual mons, but I never had the courage to make an account to ask and get advice for my own team. So before I dive into the real competition, I just wanted to get some advice for my team. I kinda wanted to make a team around my Pheromosa, but I'm a little skeptical if I'm doing the right team building.
So here's my first OU team that I thought of:

Pheromosa @ Life Orb
Ability: Beast Boost
EVs: 252 Atk / 4 SpA / 252 Spe
Naughty Nature
- U-turn
- Close Combat
- Ice Beam
- Poison Jab​

Pheromosa acts as the team's pivot early game, wearing down the opposing team, and as a cleaner late game. I chose its nature as Naughty so that it will have its attack stat boosted whenever it puts an opponent down, but is this necessary? Or does Naive look better? I'm assuming Pheromosa won't be staying on field for continuous rounds since there will always be threats that are quicker that can revenge kill it (scarf users, max speed EV, Timid Dragapult), and the fact that Pheromosa is very fragile it won't be taking hits, even if it resists it.
The movepool given is pretty much self-explained. U turn for pivoting, Close Combat being the main STAB, Ice Beam to hit other Dragons, and Poison Jab to hit opposing Fairy types.

Corviknight @ Rocky Helmet
Ability: Pressure
EVs: 252 HP / 252 Def / 4 SpD
Impish Nature
- Body Press
- U-turn
- Roost
- Defog​

The physical tank of my team. Its typing makes it good enough to be a physical tank that can pivot and remove Hazards/Screens. An immunity to ground types makes it even better, checking Excadrill and Landorus-T. A very solid pokemon that can tank a lot of variants. I feel like Corviknight is a necessity in my team since it will tank the damage when Pheromosa comes back from its U-turn, and has the ability to heal itself back up. Moreover, the fact that Corviknight has U-turn means that it can also pivot out to keep the momentum, and also take a hit from quicker opponents before sending in my sweeper back to the field.

Toxapex @ Black Sludge
Ability: Regenerator
EVs: 252 HP / 4 Def / 252 SpD
Calm Nature
- Scald
- Haze
- Recover
- Toxic Spikes​

The Special Tank of the team. Toxapex is here to tank Calm Mind Clefables, Defensive Heatrans, and Magearna. Moreover, the key role of Toxapex is to use Haze before it gets too late, stopping the opponent from sweeping the entire team. I added Toxic Spikes so that it can also set up some entry hazards, which will help the Cleaners/Sweepers do their jobs better with the opponents worn out a bit.

Zapdos @ Heavy-Duty Boots
Ability: Static
EVs: 252 HP / 184 Def / 72 Spe
Calm Nature
- Discharge
- Heat Wave
- Roost
- Defog
​

Zapdos is holding Heavy-Duty Boots to avoid damage from Stealth Rock. Being able to avoid the chipping damage of it is great. Just by ignoring the entry Hazard damage, Zapdos becomes a very stable Defog mon. Just need to worry about knock-off users. It can function as a tank, and spread paralysis as well with Discharge with a solid 30% chance, or with Static, crippling the opposing team's sweepers or speed-reliant mons. Zapdos is capable of walling/checking opposing Kartana, Rillaboom, and Corviknights. Heat Wave complements Zapdos, as it makes Zapdos hit Steel types and Grass types hard, as well as making it capable of hitting ground types.

Latios @ Choice Specs
Ability: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Draco Meteor
- Psyshock
- Mystical Fire
- Trick​

Latios is here to function as a special attacker. It is quick enough, but needs to have Dragapult off the field for sure. Draco Meteor and Psyshock are the main STABs, which Psyshock is used to send Blissey to Pluto, while Draco Meteor is used to send the others to Pluto. The downside of it is that both STABs are walled by Steel types, which is the reason why I put Mystical Fire for the third attack. The move itself is not that strong, but can sure hit make Ferrothorn and Kartana dance around. The fact that it's using Soul Dew(instead of Life Orb since Pheromosa is holding it) would also make it harder to wear out, but the sacrifice in power would be noticeable. Edited: Advice from musiquepkmn, I changed the items to Choice Specs and took out recover to put in trick to completely cripple Blissey & other opposing supportive mons when needed. The choice specs would add much more power, which would definitely be handy.

Cinderace @ Heavy-Duty Boots
Ability: Libero
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Pyro Ball
- High Jump Kick/Gunk Shot
- Sucker Punch
- U-turn
​

It's fairly sad that I can't have Heavy-Duty Boots on Cinderace, as it would be pivoting in and out, just as Pheromosa would be, but having two defogers makes it feel like I could make it work.(Another thanks to musiquepkmn, there's no limits in repetitive items, so I'm definitely using Heavy-Duty Boots on Cinderace) With Libero, all moves would get STAB, and Cinderace would act as a Sweeper for my Team, as well as keeping the momentum using U-turn when it faces danger. Sucker Punch is crucial as it gets priority to hit Dragaput very hard, and between High Jump Kick and Gunk Shot I'm still debating which one would be more efficient. High Jump Kick let's Cinderace scare off Heatran and Tyranitar, but having Gunk Shot makes it beat opposing Fairy mons a lot easier.

In conclusion, what I can see is that I lack a solid Ground type, which may let my team swept by Regieleki & Tapu Koko based teams, so I might have to take Cinderace out of the team and replace it with a ground type. Moreover, if Toxapex is down, then I won't have a way to stop boosted sweepers from sending my entire team to Pluto. The good part of the team is that I can get entry hazards off the field fairly easily, and my three tanks all have a source of recovery. I can also keep the momentum by pivoting in and out with my attackers.

Thank you all for reading, and any feedback is welcome! I'll be very grateful for your feedback.​

 

[iluvpotato]

Any opinions? I'm thinking of putting in a ground type, like swampert that can set hazards and also pivot out, but Idk who to take out.

 

[musiquepkmn]

Why can't you use Heavy-Duty Boots on Cinderace (or Life Orb on Latios)? There is no Item clause meaning you can use Heavy-Duty Boots or Life Orb twice in one team. Also, Soul Dew is not a very good item. I recommend Choice Specs on Latios and replacing Recover with Trick, meaning you can Cripple an opposing Blissey for the rest of the match.

Main points are that there is no Item Clause to limit your item choices and Choice Specs is the best item for Latios

 

[iluvpotato]

Why can't you use Heavy-Duty Boots on Cinderace (or Life Orb on Latios)? There is no Item clause meaning you can use Heavy-Duty Boots or Life Orb twice in one team. Also, Soul Dew is not a very good item. I recommend Choice Specs on Latios and replacing Recover with Trick, meaning you can Cripple an opposing Blissey for the rest of the match.

Main points are that there is no Item Clause to limit your item choices and Choice Specs is the best item for Latios

Thanks for letting me know about the no item limits! I surely got confused about the item clause. That'll be good! And definitely choice specs trick on Latios would counter blissey hard, definitely gonna change that. Do u have any suggestions on who to replace to put in a solid ground type(thinking of swampert right now but I'd take any recommendations)