KIm, nowhere in your original post or the follow do you state your wife wants you to transition. You interjected transitioning may be something to occur in the future. If she has lesbian tendencies then I suspect your transitioning may be a deal breaker for her. Maybe, you're offering her the best of two worlds. She has a man to appreciate her womanhood. She has a woman to appreciate her womanhood. Sure, she may be attracted to your female persona because she likes your female sensitivity and Kim lacks the boorish behavior of a lot of men.
Frankly, transitioning all the way would leave her with a "lesbian" who presumably would have to pleasure her with devices made of plastic and latex rather than god made flesh and blood. Is that what your wife would want?
Sounds like you need to have a discussion with your wife. Interesting problem! A wife wants her male spouse to be a full time cross dresser lesbian lover at the lost of all of his manly time???? Would you really want to lose all the aspects of your manly life? I don't think your wife is asking that.