Glad you posted. I've learned support and understanding is critical. It's great that your wife is on board and that you found this forum. Don't count out AA, there's a great saying "Take what you need and leave the rest". By that I mean you don't have to be religious and you don't/ won't relate to everything being talked about. But there will be things said and discussed that could prove useful if you're able to weed through what's relevant to you.
I hope you look into a SMART meeting. I've often wished I had more diverse meetings near me but as I don't I've gone to AA and practiced what I noted above.
Hoping your withdrawal stays manageable. Please believe people when they say withdrawal only gets worse each time.