Hi Loco,
If I were you, I'd narrow my search to a few communities of interest and then spread out the job net. My husband and I lived in Greenville (60 miles from Dallas) for a few years and Mesquite for a year. In hindsight, we would have done more homework when we left Greenville and moved to Mesquite. In the first place, we would have rented a house or apartment for a few months before rushing into buying a house. You didn't mention what your job is, but if your husband is a teacher, then most of the ISDs in the DFW area have increased their salaries over the last year to a decent wage. I say that because both my husband and I are looking for teaching jobs in Texas and DFW is drawing us back into the fold because of that and the reasonable cost of living.
Areas in and around Dallas County you might be interested in...
Rockwall (expensive but there are still some bargains)
Wylie
parts of Garland (new Firewheel mall and developments in N Garland)
Forney (south of Rockwall)
Frisco/Plano/Richardson are nice but pretty expensive. Also lots of development and McMansions springing up all over the place. That might be changing with the slowing economy...I doubt it though.
I can't tell you much about FW because I don't know much about it...but it's a place that we're looking into for a possible move. Job dependent of course
I'm not so sure about the $7,000 - it depends on whether you're going to buy or rent when you arrive and what you need once you arrive (washer/dryer etc).
One thing to keep in mind. Be careful about the commuting estimate between where you work and where you plan to live. What may look like 10 short miles zipping up I-635 could end up to be a 2 hour drive depending on the traffic flow. So in between the time you're renting and buying a house, you should "test out" different commutes at different times of day. When we lived in Mesquite it only took me 40 minutes to get to Duncanville, in the south, every morning. That was because I was going against the traffic flow. The commuters heading up to N Dallas were stuck in jams the minute they hit I-635.
This is probably more information than you wanted to know, but I hope it helps.