Single foster parents - How many kids?

Single momma, work full-time outside home M-F, 9 to 5. What saves me is my job is flexible for appointments and an occasional work from home day. I have a good support structure for after-school care and currently don't use any daycare because all my kids are school age. I did spend a couple thousand this summer sending everyone to camp during the day. I have six right now ages 12,11,10,8,8,7. Three adopted and three foster. I get judged ALOT because people don't get how I can do it. But the reality is I just do it. If I didn't have the support structure, flexible work schedule, big van and/or parenting skills for six I wouldn't take six. I definitly support the notion of starting small. I had one for awhile then jumped to three with a sib pair and then usually linger around four five.