megawatt,
Hello there, and welcome. You sound like someone who is determined to do what is right, wherever that may take you, and that, Sir, is the most important part of your decision made. Everything else will come in time. Don't feel rushed, and stay true to yourself (even if that requires delicacy around others, including your wife, for the moment).
If I may share a little of my experience which I think you might find helpful...
When I had doubts, I decided I would keep my research to what the Watchtower Society claimed was its basis of teaching: the bible. That way, I would not be "deceived" by anyone who was wicked at heart and out to destroy what, to me, may have been the true religion by reading falsehoods on the internet. I used educational books written by scholars who had no need of mentioning a minority sect which goes by the name of Jehovah's Witnesses. It took me several months to do it, but I ended up with an incomparably greater understanding of the context in which certain biblical books were written and what the authors actually intended to convey.
You seem to be approaching things from the "other" angle, by finding out just what those who claim to be God's only channel of communication to the world have been getting up to. Nothing wrong in that, of course. But I mention it because you say you are not 100% certain that what you are doing is right. That's only to be expected; years and years of being indoctrinated with the idea that anything that casts the Watchtower Society in a bad light will potentially lead to your thinking being warped, your faith lost, and your existence destroyed at the hands of our loving saviour, Jesus, and his 144,000 (or at least most of them, I forget the current teaching) "co-rulers" at Armageddon is bound to make you think twice.
Well here's my advice. If you want to find out what's been going on in the organisation concerned over the last 130 years or so, then carry on finding out. But I think you may find it very helpful to also evaluate its claim that its teachings are bible-based in light of some real bible study, as basic knowledge of history and literature which is related to you by experts in their field, backed up by real references, can really ease the mind-squashing effects of partially believing that the Watchtower Society is the only route through which biblical truth is taught.
You don't have to spend months and months on it like I did if you don't want to, and to get a brilliant overview by reading one book I recommend How to Read the Bible: History, Prophecy, Literature - Why Modern Readers Need to Know the Difference, and What It Means for Faith Today (Oxford University Press). The chapters can be read in any order (though I recommend the introduction first), and I think all who have been affected by the Watchtower Society will particularly appreciate chapters one, two and four (see the contents page in the Amazon search inside feature). It's light bulb moment stuff, and I can't recommend it highly enough.
Also useful is the site apocalypse!
About your wife and family/families: if, when you have come to a conclusion about this religion, you find you want to help them free themselves of the influence, do not be too abrupt and tread very, very lightly. Unfortunately, trying to convey what you've found and how you feel could more than likely cause trigger responses and send those mental barriers right up. I made that mistake. I just wanted to be honest, and let my family know what I felt. Now I wish I'd taken the long term approach.
Helping others in the same situation requires allowing them to think for themselves. This could be done by asking them for help on a particular point, though you know full well there won't be a satisfactory answer. But getting them to consider one question at a time in order to "help" you can only help them. You would probably find asking them questions relating to the bible, which you'll find in the book I mentioned, with an apparent view to finding a solution less confrontational, and thus less damaging to your cause, than bringing up issues directly related to the Watchtower Society's less-than-holy behaviour.
Finally, know that whatever happens, no one - absolutely no one - can take away from you who you are. Remember to show your wife you love her at all times, and don't rush her.
Thinking of ya.