Hi, Drew.
While you've made up your mind, I just want to re-state a few things that mirror my concerns.
You seem very optimistic about the potential outcome of your plan. It would be of tremendous benefit to your wife if it came off as you'd like. What worries me is that the risks to your wife may outweigh the benefits.
As was already mentioned, one risk is destroying your wife's respect for and trust in you if she discovers your ploy. One of the most hurtful things those who leave the Org discover is how the GB and those they put in authority give the appearance of doing a particular thing for a particular reason when they really have ulterior motives. The GB also thinks they are doing the rank-and-file a favor. While your motives are good and you deeply love and respect your wife, will she see the ends as justifying the means - especially if she discovers your plan before she's changed the way she thinks? Will she be in a place where she understands the difference between your actions and those of the Org? What is the potential for unrepairable damage to your relationship? Is that a risk you're willing to take for you and her?
The other risk mentioned is driving your wife in deeper. Your behavior and greater association with the congregation may provide enough encouragement to override the negative things she experiences. That is, after all, standard operating procedure for JWs. If she doesn't think and reason the way you'd expect - and she hasn't so far - you may do her more damage than good.
I hope I'm just being pessimistic. I wish you and your wife the best of outcomes.