Surrogacy

Okay so after me and my husband had a miscarriage And a few months Of heart break, we decided that we wanted to try surrogacy except we don't have the money for the doctor and everything so we were gonna do it our own little way and hope to god it works. Well the baby won't be my baby but it will be his and I'm okay with that. Just found out today that he went and got a stork a couple weeks ago and did his thing and stuff like that as a surprise to me and the girl is now late and waiting a couple weeks before testing. My question to you is how many of you think a surrogate mother will work..? I'm super nervous about this whole thing because I don't want her to get attached and decide she wants to raise it and not give it up.