It all depends on what type you like. Do you like to melee or use spells? Sadly iv been every class before i quit and i prefer melee some days and spells the other days
If you have a name you like but its taken, go into Start > All Programs > Accessories > System Tools > Character map. So if you want a name like say, GameRenders and its taken, take an ê from there and make it GamêRenders or something along those lines, you will be able to get it most likly. Good luck
Even tho you chose one already, I'd say it really doesnt matter since they all have their advantages. It depends on how you play, like if I play as a prist or w/e and was in a group and some one needed to be healed I'd probably forget and just keep attacking while every one starts throwing a fit why I forgot to heal, so thats why I like to use warrior even tho they dont have special spells. Like when I was playing with a friend of mine I was some class I forget but it could heal and my friend was a warlock or a warrior and he died every time cause of me not healing him in a battle. So he ended up being a priest and me a warrior and we did much better that way.
Blood elfs benefit greatly to paladins, rogues, and sometimes hunter (for PvP purposes). The AoE silence makes it so that if a hunter gets into face to face with a caster (my main, a warlock, often gets in the face of hunters because they are useless at close range). Rogues and palidans are generally always near the front lines, or can atleast risk running through the front lines to do an AoE silence on the enemies. Rogues are extremely noticible for their ability to use this in that the ycan call on it while stealthed and get a few hits in, vanish, run around, stunlock the remainder of your life gone. Warlocks and Priests both get an AoE fear, basically nutrilizing the abilities of the AoE silence, and mages, well... if you let anything get close enough to kill you that uses mana, your a horrible mage.
Arcane / Frost builds are the best mage builds, as far as DPS and crowd control are concerned. Fire = pure dps, little survivability, horrible crowd control (mage wise) Frost = mediocre dps, high survivability, great crowd control Arcane = high DPS, high survivability, -------decent crowd control and the new arcane tree = better for DPS overall than the fire tree is, its the only spec where you will never have to respec for end game dungeons because the monsters are more resistant and/or immune to your particular damage specialty.