It depends on what colours you want in the litter.
If you want more opals then breed her to the opal, if you want black then breed her to the black. You could get several other colours but that would depend on the hidden colour genes your doe and the two bucks carry.
Genetically your blue pointed white doe is aa B_ ch_ dd E_ VV
The opal vienna carrier buck is A_ B_ C_ dd E_ Vv
The black chocolate carrier buck is. aa Bb C_ D_ E_ VV
Just to be sure we are talking about the same colour, does your doe have red/pink eyes?