PDC to BDC on Dif. Domain

I have a PDC (single server) on one Domain that I would like to move to a new domain as a BDC. The domain it is going to has a PDC, BDC, and Citrix Server (Member). I would like to move the other Server to this Domain as either a BDC or a Member Server, whichever would result in the most beneficial use of the server. (Probably a member server)

Thanks