My first RMT I need some advise and suggestion a for my team

[PokémonChampion Red]

Rotom W (Red Card)
Levitate Modest
EV's: 232 Hp, 220 Spd, 56 Sp.Atk
-Volt Switch
-Hydro Pump
-Will-O-Wisp
-Hidden Power (Ice)
(I know weird item but I use it as a way to get pokemon that setup out and deal some good damage.)

Azumarill (Assault Vest)
Huge Power Adamant
EV's: 252 Hp, 252 Atk, 4 Spd
-Aqua Jet
-Play Rough
-Ice Punch
-Superpower
(Physical Attacker)

Chandelure (Assault Vest)
Flash Fire Modest
EV's: 252 Sp.Atk, 252 Hp, 4 Atk
-Fire Blast
-Shadow Ball
-Energy Ball
-Psychic
(Special Attacker, I know weird item to have on a chandelure but with its moderate defensive sand assault vest lets it take hit while bringing them too.

Venusaur (Venusaurite)
Chlorophyll Calm
EV's: 252 HP, 252 Sp.Def, 4 Atk
-Giga Drain
-Synthesis
-Earthquake
-Sludge Bomb
(I use it as a specially defensive wall)

Aegislash (Weakness Policy)
Stance Change Adamant
EV's: 252 Hp, 252 Atk, 4 Def
-Shadow Sneak
-King's Shield
-Swords Dance
-Sacred Sword
(Boost Sweeper)

Ferrothorn (Rocky Helmet)
Iron Barbs Relaxed
EV's: 252 Hp, 148 Def, 108 Sp.Def
-Curse
-Protect
-Power Whip
-Gyro Ball
(I use it as a tanky physical wall)