I want to raise a child with cousin lesbian ex girlfreind?

I would like to raise a child with my cousins ex girlfreind who is lesbian, I myself am bi, but I want to know what challenges come from mixing like that for us and for the child. I will accept all input but any religious freaky people or close minded people who want to try and force god in this subject keep moving...! I don't mind chatting about it another time but you can't mix religion and new ways together so let's not go there for now. I want to raise a strong girl and Britney is a strong independent women that wants to raise a daughter with me but unfortunately I am a man so we wouldn't make a good couple. Anyways share your opinion all you want with out long religious add ons please..