Congrats on waking up, IWTB! It is very liberating to come out of that atmosphere, but the journey out (and the pain along the way) will be well worth it.
As you've discovered, info dumps are generally bad. The fact is the people still "inside" that mentality will see this as a hostile action meant to destroy their faith in God. You know different but they don't. So you have to take it slow so as not to trigger their indoctinated defense mechanisms.
Fading will be tough, but it can be made easier by not confiding in anyone (with the possible exception of your wife). They will write you off as spiritually weak, but will not generally distance themselves from you if you aren't engaged in info dumps. Even minor questions will trigger their defenses, so you have to keep telling them something like "I'm just really busy right now with work." That'll lump you in with a high percentage of JWs who are caught up in life rather than being at the meetings. You won't be a threat to them, which will allow you access to them and maybe someday you could spark some interest in others doing a little digging. None of this is possible if you tell anyone you have question, though.
And about the mid-life crisis part, don't let the JWs close to you keep you from enjoying what's left of your life. Take charge of your direction, give in to your desires (at least the ones your wife won't mind), enjoy an occasional cigar, go to a Christmas party, have fun at a casino. Whatever it is you want to do, don't put it off too long or THAT will become a regret as you get older.
Either way, glad you made it out (mentally, anyway) and enjoy your journey!