Wow! Is this perhaps a half-a-year-old team? Fantastic! This has been active for OVER FOUR MONTHS!
I'm not so fond of Weather Teams since it's a dominance this Generation, thanks to Ninetales's and Politoed's Dream World Abilities.
The team is very solid, despite the massive Ground weakness on paper.
Too bad your team doesn't have Priority, and as such, Double Booster Terrakion (despite very uncommon in Wifi OU) might act a slight threat to your team (with Air Balloon intact.) Therefore, when Snorlax was locked into Earthquake, Terrakion will pop out, and set up Rock Polish or Swords Dance to your counter, and it will wipe out the whole team. (you have nothing to handle Fighting-type attacks!)
>> 1. Jirachi will take serious damage from Close Combat; what more if it's boosted?
>> 2. Rotom-W lost its Ghost typing; it's now prone to Close Combat, and takes serious damage as well.
>> 3. Terrakion will outrun Infernape and Lilligant if Rock Polish is activated. Those two will take serious damage from Close Combat as well, or if not, OHKO'ed.
I'll edit this post soon for a replacement for one of your team members to a Pokemon that can handle Fighting-type attacks. Be right back!