That was a great e-mail. IMHO, right now there is just too much blow-by-blow analysis going on. It's too much to think about and your mind is going to explode. And isn't overthinking the habit that causes some of your more troubling anxiety?
Just give yourself a break and just be yourself and let your new changes sink in. After all, isn't it the real YOU you want S to love? And simply be kind to him--which is exactly the sentiment conveyed in your e-mail. Kindness needn't be pursuing and isn't that the most we kind of others in how they treat us? In fact, I think the best advice I have gotten along my journey is to just be kind and try to make it a way of life.
Btw, I do want to repeat that S's being rejected for M is HUGE, HUGE, HUGE. A male does the hard thing in his mind and exposes his rawest emotions to a woman he loves; even if the rejection is kind, his heart was chewed up by a jackal. I know that if get D and ever get involved with someone else again, my defensive guard is going to be 100 feet tall. And I suspect S has not had the benefit of serious T or counseling or self-introspection the way we have. Which reminds, me, I don't think you have yet answered what he wants? Methinks he is afraid. Again, be patient, and be yourself.
Oops. One more thing. It sounds like he expects to go to Georgia. Unless you're seeking an ultimatum from him, I think you'll be opening up a real can of worms of doubt if you tell him not to come.