I guess the first thing would be to talk to your wife about this, and let her know how you feel about yourself, and also about her. Maybe you could go through the book with her, and work through all the issues you come across.
If you still love each other, then that is the best point to start from I think. Hope it all works out.
(My wife left me for another woman several years ago, so at least I don't have to worry about the effect on her of my transition.)