I haven't read all of your posts to know your background. Is your wife also leaving/wants to leave? Or, is this between you and the Borg? If it's between you and the Borg, I wouldn't use the wife as a messenger. I think that would be very hard on a believing/hoping spouse to do. She loves you, and her doing this could be very hard on her emotionally. You have to take into account her feelings all the way through this. The rest of your family too. You are asking them to lose their friendships, which a short time ago you probably defended as being the best.
My advice to you, is to slowly point out the illogical to your family, assure them of your love to them, and have as many good family outings and picnics. If you alienate them (say, wifey thinks you are less of a man to have a woman do his bidding, left the JWs, left Jehovah), you are setting yourself up for a divorce. If she divorces you, then who is going to get the kids? What if she remarries? What if it's a quickie JW marraige? What if he's a wife-beater who is going to expose your children to abuse, or worse, a pedophile brother who wants to be near your teenaged daughter, but WOWS your wife with a 2 week fake show that he is absolutely great JW husband material? You have too much to lose, to not carefully plan every battle and every battlefield.
Skeeter