Yes, you can do that.Could I give the the female and one roo away and keep one of Roos with my flock of standards. The only reason I would keep one of the Roos is so the female is not kept with her and the two Roos. It would be to much for her to handle. The more I think about it the little darlings are not something I want as I have people lined up to buy my eggs and the bantams lay small eggs and late layers.
Bantam roos don't seem to know that they're small, and adore having a flock of big women to tend to.