From a Native Texan, "Y'all come 'n see us"
DFW is primarly white-colar, Houston is primarly blue-colar as is San A.. Austin is primarly college students, politicians, and a mix of hightech and labor. The liberals stay in Austin 'cause if the go anywhere else we'll just kick the mules...I mean asses. You could almost move the Mexican boarder up to Interstate 10, and west of IH35 is dry and hot with very few lakes/rivers. Of course the coast will be warm and humid, DFW in the summer is just too damn hot!
Get ya a map and a compass, draw a circle of whatever distance you are willing to drive for hunting/fishing and make sure it touches the coast line. That will give ya a good start.
If you can find employment via telecommute or work from you home, then just get a place near one of many Texas' lakes.