What class should i rise?

I am new here, i come from retail and i donate 20$ for 22 coins so i want to get and instant level boost because i hate leveling.

I am a bit confused of what class should i to rise.

I am a class good in pvp and pve , more in pvp, arenas, bgs, but i would like to do some pve too.

I am thinking about priest, pala, rogue and dk.

Which should i rise ? which is more op ? which is the funniest?

Chose Unholy DK or Retri pala.
Instead of insta level up buy yourself a 284 HC weapon for 23C, cause leveling here is super easy and fast.

You get to use the weapon even though you're not 80?

I would suggest trying the classes out on the blackrock server (instant 80, free gear) so you can get a feel for which style you like in PvP.