You're talking about moving to one of the cesspools of Texas. If you plan to shoot everyone that steals from you, you had better have a lot of ammo and a good lawyer. Unless you are prepared to deal with all of that, there are 1000s of better places in Texas to live. I would suggest buying a good safe, bolt it to the floor and park the dogs in front of it. Border towns ain't no place to be. Plenty of desperate folks just trying to get a few bucks to move north.
Look at the number of thefts:
http://www.cityrating.com/citycrime....n&state=TX