you're not giving people much to start with, ie;
how bout state your preference horde or alliance?
then how bout state if you reckon you'd rather be a tank, healer, or dps?
if dps, do you reckon you'd rather be melee or safely far away as ranged?

you should really put some minimal effort to get the ball rolling on such a discussion, as the initial post is too vague and open-ended.

with regards to class/race matching, it will depend if you want to take advantage of the racials of said classes or not. some races have racials that benefit pvp, some benefit pve etc