I can't really talk to the realities of transitioning in Texas, but I can say that HRT won't be changing anything right away. It's a slow process, and whilst you will eventually end up at a point you likely can't hide, that is months to years down the track, with lots of time to adjust your course.
You've got to do what is best for you, and first and foremost, that is your survival. But that doesn't mean transition (medical or othwerwise) has to be all or nothing.