Hi Britt. Firstly, congratulations!
I too am in my final year. I agree with the comment above - time is a precious commodity with a baby. You can get a lot done in the newborn phase, but once they become mobile, forget it! a support network of people in the same position is always helpful though - and it can be a fluid thing, if the creche/writing session works, why not!
I was made to feel like i was the only person on the planet who would consider a baby and a PhD simultaneously. So its great to know others are out there.