[VRWCmember]

1. I recommend the DFW mid-cities area (Grapevine, Colleyville, Hurst, Bedford, Euless, Southlake, Keller, Flower Mound, etc. - or Coppell, Valley Ranch, etc. if you prefer to stay in Dallas county and probably have higher taxes.)
2. Avoid east and south Dallas.
3. Not familiar with "Reformed" theology and/or what denomination that is. But there are plenty of good churches that teach sound Biblical theology and doctrine. It won't be hard to find one once you decide where to live.
4. CCW permit doesn't take long (not sure of the exact timing, but you must take a safety course, undergo a "background check", and pay a fee $200 to $250 I believe) Note: Depending on your current CCW status, you may already be "licensed" for CCW in Texas under Handgun License Reciprocity agreements with other states (Click here for more info)
5. There are several good shooting ranges in the DFW area, some indoors. Here are a few links:
Collin County Gun Range
Yahoo listing of DFW area shooting ranges

[sayfer bullets]

I have to ditto the mid-cities suggestion.

Frisco, Plano, McKinney,...North Dallas is like living in the mouth of a traffic volcano.

Grapevine, Flower Mound, Trophy Club, etc. are great areas and you would have easy access to most of the metroplex.

On the other issues I'm not a good source, but I'll vouch for the Flower Mound Grapevine area. It's wonderful.