Many mothers can express collostrum well before they even give birth. Its there for word go (lol or word PUSH!). Its really improtant to help esablish your milk supply to have the baby with you & offered the breast as often as you & the baby like.
I would strongly enocourage you to either find a Dr/maternity unit that is going to allow you to be with your baby & allow for rooming in from the start.
Gather lots of information that supports your choices & reasons for wanting this so you can give them to your health care provider. Don't let them bully you into doing things anyway different to want you want. ITS YOUR BABY.