This is a cool team, and it looks pretty solid both offensively and defensively, but I have some ideas to help you improve the team. The first thing I have noticed is the huge weakness your team has to Raikou, as your only kind of check is Rhyperior, which can be easily worn down if Raikou is using Hidden Power Grass, or simply does a good prediction. This could be easily fixed if you changed Rhyperior's EV Spread to a Specially Defensive one, as with a spread of 248 HP / 16 Atk / 244 SpD, Rhyperior will be able to check Electric-type pokemon much more effectively.
Secondly, I think that your team has quite a weakness to Fighting type pokemon, like Heracross or Mienshao, because your only answer to them is weak to Stealth Rock and can't switch in reliably. I think Cofagrigus could be a good replacement for Zapdos, as it gives you a better Heracross check, and it can also be a soft check to pokemon like Mew or Physical Kingdra, as well as acting as a sweeper thanks to Nasty Plot and Trick Room. Here's the set:
Cofagrigus@Leftovers | Mummy
Quiet Nature | 252 HP / 4 Def / 252 SpA
Nasty Plot / Shadow Ball / Hidden Power Fighting / Trick Room