Bit late, but good battle. I like your team, though I have a few questions/suggestions/concerns about it.
Trick room will likely be quite popular - Dialga is able to pull it off quite easily. Barring the Ludi (which I believe was Rain Dish, though I didn't pay attention to the ability), what would you do against a TR team?
From what I saw, your best chance on that team is stalling out TR, but that's not 100% viable - protect stalling is less likely the more you spam it, so you are likely to lose a few Pokemon. I'd suggest something like a Brave Metagross as a way to counteract it (or something similar - Abomasnow is also a good choice, since it has Grass Knot for Kyogre and Groudon, and Ice Beam is neutral on the very popular Dialga and Palkia.)
Also, if you can get on IRC, join #skarmbliss and #smogonwifi - you'll get good practice from the players there. The two channels also do tournaments every week (Skarmbliss on Saturday [visit skarmbliss.com], and Smogonwifi on Sunday)