I don't know your area but there are a lot of hs coops in our area. So if you work you could juggle schedules with other families. If you have any questions feel free to pm.

I agree with the others that ps does offer a lot of options. For us it was not an option as our local ps really caters to the bottom 1/2 of the population and grade skipping 2 years in a summer bday boy is not ideal for us.
Good luck in your quest.