Are you sure that's where you want to buy? There are better locations in the metroplex not too far away which don't cost much more. You might want to look north of DFW or up in Denton County except for a few pockets. There are some parts of northern Tarrant County that are OK, and Collin is like Denton - generally good, except for some bad pockets.
And if you are not familiar with the area, get a map that shows school districts - that can be more important than municipal boundaries.