If you're heart set on Belves, I'd go for mages/priest for this reason:

You can castsequence a rotation of mage AoE (Arcane explosion) + Belf AoE Silence.

Suvega runs 1x priest / 4x mage and in battlegrounds all he does is rush into the fray all kamikaze-like and aoe his little heart out. The Belf silence might help here to prevent people from deathcoiling/fearing/aoe'ing you back.

IMO, WoTF is still a superior racial for PvP purposes. Suvega's #1 vice is when he gets feared, as he doesn't have the benefit of staggered tremor totems to break him out of it.