There are two ladies who created a group called Boxing Autism. They are based out of Brighton, MI but you can reach them via email.
I believe they can help you with this question. The one lady does have an autistic child and is a school teacher.
There are so many jobs/businesses that you can do at home. Have you explored that? Or maybe your employer would allow you to work at home a couple of days a week and the rest at the office. Quite frankly you would probably get more work done at home those two days than the other three.
In LIvingston County there are many programs to help children like your son. Have you explored what programs are available?
Also, in Hartland schools they have great programs.
God bless you and your family.