flyguy
Since your free time is limited, check out the club in Rowlett.
http://www.rowlettrcclub.com The field is actually in Rowlett. I have been to the Rowlett field a few times. The area they fly over is relatively small and I am not a good enough pilot to fly there. Many pilots are good enough to fly huge models there but I am not. I think the Rowlett site is well matched for electric models that are not huge. Rowlett has a grass runway that is probably pretty muddy at this time.
Rockwall is next closest
http://www.rockwallrc.com and their field is in the outskirts of Rockwall. I have never been to the Rockwall field. I know several of their members who are also members at my club. Rockwall has a Propex or Petromat runway surface.
Rowlett and Rockwall are "morning fields" because you face West when you're flying.
The other "local" clubs do not have close fields. Some of the fields are an hour from Garland.
I live relatively near North Garland High School and am a member of the Greenville RC Airplane Club
http://www.greenvillerc.com
Our field is a 45 mile drive each way for me. We face East while flying so we're more of an afternoon group. My brother and I ride out together and usually try to get there between 11 and 12 and stay until we lose the light. We have a grass runway that is currently too muddy to use.