What a great journey! A post as thoughtful as yours probably deserves a more considered response than that, but that's all I can say right now: what a great journey.
Welcome to the forum. You'll meet many intelligent and kind people here, and I hope you will enjoy the discussions.
Austin? Great town. You know that's where Soulforce is headquartered, right? Also Atticus Circle, an organization founded by and for straight persons who want to work towards social justice. You might be interested in looking them up.
Anyway - Austin is the best part of Texas. Except for the allergies and the traffic on the 35. (We have family in Austin/Round Rock, and so we're often visiting. Loathesome allergies there, I can't believe it. But if you can breathe, it's a great place.)