I've been looking at how to customize my character, and I'm not sure what to spec exactly.

I found a couple builds on some sites:
http://purepvp.com/warhammer-online/...-damage-build/

http://purepvp.com/warhammer-online/...ion-aoe-build/

But I'm not sure how good those will be. I haven't played beta yet, although those builds do have +12% crit to them, and seems like the AOE version would be best for rvr combat.