I would reply to the email and just say you are happy that he is doing well in his work, that you are proud of him to be able to purchase the company you are working for in the future. I won't tell him you want a home instead of a company. If he wants to buy you the company, so be it. Just agree. Even if he wants to buy you a million dollar phone instead of paying the bills, say yes and thank you. You can always trade it in later :-)
This sounds like there are baby steps moving forward. That's great. I would be careful into not pushing anything, though, even in the area of updating with the kids. Your H may need some space after hearing about the kids and wants a few days just not think about kids issue. May be just a short reply and then stay dark for a few days.
