A.,
I can tell you from my own experience, make SURE you take ENOUGH time off for you and your family! I had one full time family and I was so worried about losing them that I took two days off before my son was born and one week after! I was so wiped and I felt like I couldn't give my son all he should have had, as well as my kids with a new sibling. I spent all of naptime just holding my baby and being with him to sear the memories into my mind, he was my last, too. I would not take any less than two off in any circumstance. I found out I was pregnant just two months after starting full time daycare so I did not feel competitive, so this family was it! I did a very good job even having the new baby. I have a philosophy. I have five kids, it's always going to be loud and busy, what's a couple more? ;o)
Ideally what I would want is a week before the baby and a month afterwards. A lot of it is personal preference.
Do not forget that you may feel ill at times, too, very important to have someone to bring in for you at those times. My husband helped out a lot, but he had a job that allowed for that.