Hi Frazzled UBM, From your description it sounds like your liife is financially secure, so why haven't you at least called/seen a professional cult-exit councilor like Steve Hassan or one of his coaches? Many members of JWN give good advice, but you could get way better advice by contacting Steve Hassan through his website www.freedomofmind.com by telling your story to him and also relieving your pent up frustrations.
As far as reducing conflict with your wife, help your wife to become involved in hobbies that are time consuming and will help her make non-jw friends who she shares common interests. What does your wife like to do? If you don't know, ask her. On meeting days make dates/appointments with your wife before and after the meetings to reduce the time that your wife is spending with JWs.
If your wife is from the Phillippines, she may be going to the KH for social reasons and not spiritual reasons. Have you searched for any filipino cultural centers/churches in your community?
Peace be with you and everyone, who you love,
Robert