So here's my $0.02.Thanks all for the replies. Seems like it's easy enough to keep it out of sight (and unloaded if I want to be really on the safe side).
The sale idea is good, I think I might do that, seems easy enough from what I found here: Frequently Asked Legal Questions (texas.gov)
If you're going to leave it unloaded and separate from the ammo just hide it at home and bring a baseball bat, ball, and glove. The bat will be of more use than an unloaded and inaccessible firearm.
If you are this concerned about possessing it loaded then maybe you shouldn't own it.
Leave it loaded and hidden in the vehicle. If you get stopped don't volunteer any information but don't lie either.
This is all assuming you are a decent law abiding citizen. If not you're on your own.
Take my advice for what it's worth.