pvp range class

Hi, I'm new here. Now I'm tring to pick a class for pvp in the warmane 3.3.5 lich. I'm considering between elem, boomkin, frost mage.
I'm going to play pvp mostly and do must do pve things.

Could you plese help me understand how these classes doing in the warmane.

Are these clases good in pvp here?
Any good parts or bad?
Is it hard to find a pvp party for each of the classes?
are these classes demanded both pvp, pve?
Is it hard to find a raid for each of the classes?

pvp is what? bgs, arenas, world pvp...?

. .

boomkin is the worst caster for pvp

Boomkin only good in PvE.

Stick to ele shaman its fun to play and awesome.