Done my homework but still have a few questions

[Littleburst]

Instead of the chatspam, get an addon that has party castbars. So you can just monitor those in a blink. I use Pitbull and like it a lot.

For classes it comes down to what you like.

Shaman are best for pvp(tremor to counter fear) and are very basic, the steady choice that can't fail really.

Druids have a big advantage that if you wanted, you could spec 1 feral and tank at lvl 80 if you ever wanted so. Healing with hots is something you must like. Boomkins are very strong at the moment at level 80, so for pure dps they'll be good aswell.