Why wait that long? Just go tell him to play in the next thunderstorm! Make sure he takes an umbrella so he doesn't get wet.Can't really do shit in the field without at least an MA, which is way above mumbles' pay-grade.
He should just go to a vocational school and become an electrician or something. Actual career opportunities and the possibility that he'll shock himself and rewire the language region of his brain.
Hopefully a bit of natural electro therapy will turn him into a functional human being. Rickie would have a useful partner, Becky could have a helpful friend, Amber could get kicked out, and the farms would laugh until we turn blue. Everyone wins!