Is your wife worried about how others might respond?
If this will relieve pressure building in your psyche, I would say do it, especially if you are prepared to accept whatever may happen. Also, I'm a huge fan of Felix Conrad's writings if you haven't heard about him, he writes primarily for non-transitioning MtFs, and I found them super insightful relevant to non-transitioning lifestyle.
I was determined to not transition and started off replacing my wardrobe and coming out as transgender to everyone. Unfortunately for me, that ended up not being enough and I'm now on the medical path. Interestingly, everyone was extremely supportive and accepting when I came out as non-binary/non-transitioning. It wasn't until I said I wanted to start HRT that I experienced negative consequences. I think it's easier for some people to deal with transness as an intellectual concept, vs. something tangible in front of them.
There are risks to coming out, and there are gains. Everyone has different needs, and I don't think it's fair, or right, or even possible to live inauthentically forever. For me, the questions I kept coming back to were "what will make me happy?" and "what will I regret on my deathbed?"
I would definitely keep communication open with your wife and see how to move forward together as a team, as she has needs, too. Therapy might not be a bad idea if she is really apprehensive about it. My gut says she might be scared of the social fallout for the both of you. The unknown is understandably scary.
And so is never getting to be who you are.
Good luck.