IF IF IF IF I were in your shoes this is what I would do. Honestly, this is what my plan would be.
I would sit down with hubby and myself and talk, talk about his goals, his ideas, what he wants to do with the rest of his life, how he wants to reach his goals, etc....then I'd ask him if we could pray about it.
If we decided this was what we're going to do then I'd tell hubby to apply at every college he wants to consider. File for financial aid as soon as he can.
I'd ask him to only consider schools that have family housing on campus. This way his financial aid will go towards your rent and his school costs before you get any money left over. It's really wonderful to not have rent, utilities, phone bills, cable bills, etc...
Once he gets accepted get on the phone with the housing department and get an apartment. I'd even consider doing fully furnished if you don't have a lot of stuff. If you do have beds and dressers it might be that storing them would be cheaper than a moving truck and all that expense.
Go live on campus. Hubby won't need a vehicle, just a bicycle or scooter/motorcycle. He will likely be able to walk to classes. He should not work during school. He should take classes in the spring, summer, and fall each year. This way his financial aid will be scheduled to cover all the semesters and not leave you having to move out each May and back in each August.
Then if he finds he's doing well in school he might want to consider going to grad school even at a different school.
When I was going to college at OSU in Stillwater OK I lived on campus and never had to worry about any bills, I only had to buy my food, gasoline, and insurance for my car. I had so much spending money. I got food stamps, since I had a child I got low income housing and a check from the state. I loved going to school and was able to focus on my grades and have nearly straight "A"'s.
If you have to work while hubby is going to classes that might be something you both have to consider. His job will be going to school. Getting financial aid takes care of his income. If you work you'll just have more ready cash on hand.
The state might have a child care assistance program so you won't have to pay a lot our of pocket for child care while you work. With both of you working together you should be able to manage this quite well.
Most of my friends went to BYU and then moved to my area because hubby got on a job being an engineer. I know lots and lots and lots of families that live in the married student housing apartments while hubby goes to college. That's the only way they could afford for him to not work a full time job.
Good luck with this. I hope you both find the strength to do this.