I just made a pvp group on Twilight's Hammer seems as good a place as any. And at least 1 multiboxer is there already. Priest and 4 locks. Having major doubts though, fancy playing priest/4 locks...priest/4 mages and 5 shadowpriests. Went for the locks.
For the record my pve group (warrior/priest/2 mages/lock) is on Nagrand dunno if I ever mentioned that or not.