Anxious thoughts

So the father of my baby wants to be involved in baby's life (after y'know telling me to adopt out or abort and all). I don't pretend to like this guy anymore. In fact I kind of hate his guts. That being said, I know he and his family will be painful to deal with later if I don't let them visit in the hospital once my son is born. They'll probably be offended that I don't want to tell them when I go into labor but I don't want to be stressed by their company when I'm trying to push a baby out. Would it be okay for me to tell them when the baby is born and have them wait to visit until I'm situated at home? Or should I just tell them to visit the day after and call it fair? I'm extremely nervous about him holding my baby but I know I'm gonna have to let him eventually. He claims not to even want to sign the birth certificate but I'm a little nervous he's gonna try to pressure me into letting him. If the nurses find out he's the father will he have to sign it?