Sounds pretty reasonable. I hope the homeschooling works out for the best.
Within a few months, my son went from communicating with a picture book to speaking. So yup, we've seen benefits! We also learned a bit about his special education documents.. a neutral teacher told me they had him pegged as severely disabled, and her opinion was they simply didn't want to deal with him. He is challenging, and it was easier for them to put him in a self contained classroom, even though that's not where he should be intellectually. (They did this to my older son to an extent, and I didn't realize it until it was too late.)
On that note, I'm looking forward to one day being able to take him to do more hands on stuff out in the community. Always the best way to learn! I have had so many ideas that I can't implement because it isn't safe to do so. Even a trip to the library is 'in-out'... no puppet shows or story times...