I'm not sure if you have a midwife or a doctor. My midwife was very conservative with any treatments after birth and vaccines. She let us make the decisions when I gave birth in the hospital.
As for the hep B vaccine, we opted out because it is completely unnecessary unless you have it or if your newborn baby is sexually active. haha.
With the erythromyocin in the eyes, we turned that down as well. Unless you have certain STD's it is completely unnecessary as well. It can cause temporary blindness in the infant to where they won't even want to open their eyes. My baby was very alert and the nurses even commented on how he wasn't sleeping very much.
SO, with the vitamin K... originally we turned it down. We are not against vit k but if it's not needed, we thought we could pass. I had a tough childbirth and my son was in the birth canal for over 3.5 hours while I was pushing. I trusted my midwife and asked her opinion... whether or not he should have it. She looked at how bright red his head was and said that she would probably do it since he needed to heal. So I went with it. And he's fine. If you don't like the thought of the shot, you can research getting an oral vitamin K once their born. Or you can start drinking certain teas or supplements to up your vitamin K that will go through your breast milk once your baby is born.
As for the PKU, I don't know if it's a concern to you or not. I never felt concerned about it because I think it's just a prick on the foot to do testing. Other than that, I don't think it's cause for worry.
Basically, be very adament in a hospital setting about what you do or don't want. After you have the baby, have your husband follow the baby around. Even when the pediatrician comes around to take all the babies for testing, don't let the child go alone. They are so used to doing things out of routine that they may do something you didn't sign up for. It's your baby and you have a right to follow it wherever.
Good luck and congrats!!
**When it comes to circumcision for a boy, we waited 2 or 3 weeks to have him circumcised so that it gave him time for his blood to work correctly. Most doctors won't do it any earlier... so that shouldn't be a concern anyway.