I'll confess, I'm of two minds about the spousal support. On the one hand, she was a stay at home mom for five years, which presumably mommy-tracked her career - spousal support helps offset that. On the other hand, she's the one who is blowing up the marriage without trying to save it, why should she benefit?
Be aware though it can be difficult to rush divorce with a WAS, as they really can't be bothered to do paperwork. You will have to do it all for her, and I'd still advise running it by an attorney even if you are doing the divorce yourself - don't be penny wise and pound foolish.
Also, you mentioned she's Russian - is it possible she married you to get a green card? I think the fact that you were heavy when she married you but then she started complaining about it is a red flag that she might never have been sincere (although to be fair, some people marry thinking they'll change their partner).
Ah, the divorce diet I'd love to study it, it works so well! Take full advantage of this time to become the best version of yourself. Whether you reunite or move on to a new relationship, working on being a better version of yourself will pay off.
As for your W - no, it's not controlling to want your wife not to have affairs! If you look back on your relationship before the affair, was she a great wife who just suddenly got abducted by aliens - or was she always selfish or narcissistic? Some spouses just get depressed and go off the rails - others have longstanding character defects that may never change. (Mine was a narcissist, I really didn't fully recognize this until after we divorced.
