I would agree it's best to take your time and do some research. It takes quite a lot of time to get all of the jw mindset out of a person. Then, just when you think it's gone, some part of it rears its ugly head.
Why did your family decide to leave the organization? It is nice you have all of them out except one.
As far as churches go, you can stop by and sample them, if you choose to. I know the UU, Unitarian/Universalist ones accept gay persons. They even walked in a gay parade here recently.
Wishing you the best in your journey. Take it slow.
Sincerely, choosing Life