We nearly went to the hospital with our top 5 names. The week before I was due (so, two weeks before her arrival) we decided I didn't love any of the names more than he loved his favorite so we made it official.
You might need to hold the baby and call him/her a couple of things before it feels right, nothing wrong with that. They won't discharge you without a name for the birth certificate but there's no rule that says you have to be completely decided when you get to L&D
I'm curious - What are your top choices?