Having fun with your pallies? I have five myself and its just a fun fest whenever I play them. They used to be retribution up until late wotlk when they nerfed cleanse and the other various cata changes. I switched them to holy, bought them some welfare pvp epics, and then just laughed as I could keep entire raids busy trying to kill me. Yes, it was very much flavor of the month but it was oh so great while it lasted.

I did most of the heroics (with one prot spec), and was able to beat them with ease, although given how late it was in the expansion it really wasn't a suprise. DPS is kind of lacking, compared to my other team, a mixed caster group, but the coordination is there. I swam over to throne of the tides and cleared my way to the first boss on release night, but couldn't get her down below 20% before wiping. Hopefully with a complete cata-level gearset then these bosses should be doable on normal mode with some practice.

For pvp I do have a lot of fun out in the world, but don't expect to get very far in arenas without good CC and burst. Hopefully some with more pvp experience can chime in here and give you some tip on what you can try to be competitive.