We will get it since both beta tests we were in (stress and open beta), we only got to lvl 20s. I figure this will be the last time I can enjoy a game without too much interruption before next April.
We'll be on PvE as well. It's hard enough sometimes to compete for camps, when you play on PvP, you have to worry about getting agro by mobs and people around you try to gank you or vise versa.
I am pretty sure we are going to go as mage/priest combo since mage/mage is nice but later on in instance or higher lvl quest zones, you'd really want someone who can heal to go with you.