I would charge $125 per care shift as you will be feeding this child at least 4 meals. but to be honest there is no way I would take on a child with those hours.. Having a schedule in advance is nice but do you really want your weekends and holidays screwed up.. What happens if both parents are working Christmas AND ( or) NEW YEARS. or what happens if the child is sick during the parents shift?

It would be hard to plan your own free time and vacation and you would have set up a proper sleeping area for this child.