To be totally honest; no.
The best one you have is your Adamant Ho-oh, but the 30 attack IV is suboptimal since you'd be wanting to invest in it, and the 29 speed is the same although Ubers Ho-oh doesn't invest in it.
Your Mewtwo, Latias and Thundurus' IVs aren't even correct. Any legendary caught in generation VI will have at least three stats with an IV of 31, so you'll need to double check their IVs with the IV checker. The Thundurus doesn't even have 6 stats listed so no one knows which ones are what....
Your Landorus has the potential to be good since it's Impish (a desired albeit sparse nature), but you settled for one with a SpD IV of 10! I know you got 'lucky' with getting a fourth 31 IV but that really isn't good enough..
Basically, over in Wi-Fi there is so much competition that people don't settle for anything less than 29-30 in a stat they don't invest in (and 31 in the stats they do invest in), in fact a lot of people subscribe to the #flawlessorbust mentality where they will go for nothing less than 31/31/31/x/31/31 on a physical attacker, or 31/even/30/31/31/31 on a Hidden Power Ice special attacker. In addition, there are already flawless versions of every Pokemon you have so far, so there's no point getting one of yours when you can get something better from someone else.
Sorry if I sound harsh, I'm just trying to be honest.
Like the others said you should definitely play out the game and have fun before doing any of that. You'll also need to collect all the mega stones you need as well as the TMs (there's a link in my sig for them hehe). At the very LEAST you should at least wait until you have the Mega Bangle (or whatever it's called) that let's you use Mega Evolution in-game since you can't use it in Wi-Fi battles if you don't have it (I found this out the hard way, lol).