Are you planning to change anything at home with regard to eating/fitness level? Does anyone else in the home need to lose weight or increase activity? I think Bradley may not be able to keep his weight in check if there are still oreos and ice cream at home, and no one to play frisbee with or run/walk around the neighborhood. I hope he can get healthier and stay that way.
I wouldn't listen to negative people about homeschooling. If you feel it would benefit Bradley, pull him out and try it for a while. He may choose to go back to public school, or you might find some co-ops (classes he might be interested in during the day for homeschoolers) by asking around or advertised at the library or websearches. I found a flyer for my homeschool group at the library. One of the women told me about some classes in another part of my county for homeschoolers - they have math, art, fencing, science, and many other choices on T/TH. On Fridays we go to the park or the pool, or another field trip. Most moms teach in a laid-back fashion as opposed to a lot of desk work/book work. If we go to the aquarium, the kids learn about aquariums and fish and maybe architecture and construction, marine biology, etc. If we go strawberry picking, they will learn about farming and/or cooking.