Congratulations!!!!
IMO....take as much time off as you can afford!!!!!
I had a full year with my first ( EI from "regular" job). With my second I closed my daycare completely and started from scratch when she was 8 months. Caring for children is exhausting....especi ally your own!!
If you can't manage a full year you could try stretching it out by taking on part time kids or less kids.
I told all my families just after 12 weeks. They all stayed on till the bitter end ha ha!
Best of luck!!