I say you should follow Returner's advice, besides, Undead is already a pretty wicked race for both classes (what with WotF and cannibalize, and the priest shadow spell Devouring Plague).
Anyways, there you go(I hope thats right), pretty cool racials for just about any class, stealing mana and then AOE silencing with a minor mana/energy return and a minor resistance plus against all schools of magic ^_^
Maybe you could start with one now and make the other alt in BC if you like them both.