Congrats!:
Yeah, it sucks from the benefits side of daycare. I am in Canada and here moms get ONE WHOLE YEAR off with 55% of their normal pay for maternity leave. BUT, when you are self employed here, as are all daycare providers, we have to pay IN to the system but can't use it ourselves.
So much for social welfare.
All I can say is it's really up to you. Take the amount of time YOU need. Also take into account how long you think your dcfamilies will wait around for you to return or how abundant the daycare market is in your area.
Good luck!