My hours are 7:30 - 5:30. Even with that I used to work 12 hours a day as I had school aged children through nap time and couldn't cook any of my food for the next day through rest time, so I was doing it at night.

I would not set my working hours for 12 hours a day. That is a recipe for burnout imo. I would set your hours according to what you feel you can successfuly do and find families to fit in those hours.

Yes, more will probably come.