Kendra,
I think it is a good idea. The more time you will wait, the more violent will be the choc for your wife. There are women who can't just accept crossdressing. But there are a lot more who 'just' have to adapt themselves to the reality. It can take time, a lot of time. And you will have to adapt yourself to the reality that your feminine side is exposed to something else, a woman, who will certainly have influence on your crossdressing.
Try to be honest about your crossdressing, but don't mix what you do and what you dream of. My dreams are more extreme than what I would ever dare. Everybody needs a secret world. Don't open the doors wide open. Try to be honest with yourself, and answer about what you will do. Even if I dream od sex change, I don't want to go to hormones in real life. The limits are the main questions.
Even before telling her, try to be coherent. If your lie was so intense that you tried to be an archetypic macho, your wife will be more shocked. If you show already you're interested into feminine things, it might be easier.
Your wife might question herself a lot about her own feminity. There is already a woman in the house, try to pay attention to it. Try to respect her limits, and if you respect her, she might respect you and your crossdressing, because crossdressing is a part of you.
Take the time to listen to her, and don't manipulate her to go back to your usual crossdressing. Your crossdressing will change and you will have to adapt yourself too. Try to respect her limits, except if she ask you to totally give up, because if you told her you were a crossdresser, your limit is that YOU ARE A CROSSDRESSER. In that case, tell her the truth, that it will never end.
