Oh, sorry, when you stated 25 man I kinda assumed you were talking about pve.
As truthwow1 said for PvP resto druids all the way, you want to be mobile and have insta casts.
Yeah, at first I skimmed through your post. Then when I re read properly, I could see how it would be more aimed for a PvE playstyle. Still, if I ever decided to PvE, I have all the answers lol :D