Single foster parents - How many kids?

Single, work 3 days in the office (8-5) and 16 hours at home. I have adopted 3 (one has moved out) and have 4 fosters (with a potential sibling to be added at birth). I agree with pp. start small. You must have a supportive boss/occupation. All my kiddos are special needs to some extent so that means doctor, PT, OT, Speech, specialists, mental health, in addition to visits and phone calls and school and... I can't imagine being sane/successful without a schedule. I currently have 6 : 5,5,4,4,2,1. So that is 3 schools, 2 daycares and 3 primary care doctors, 6 specialists, and 3 mental health providers. While it is a motley crew at times, it is too quite if one is gone!