Starr,
You've received plenty of info but I'll add my $.02 anyways.
If you can arrange a half day to play, you can hit all of those mentioned. RCA, Tek, and FB are all on the, mostly, same side of town. Depending on where you are staying, you could start at one and work your ways towards the others. See the map James referred too.
Also, while here, be sure to check out some of the local cuisine vs hitting the chains. Chuy's, Trudy's, Torchy's, Guero's, Rubys BBQ, Hoover's, Kerbey Lane Cafe are all great places to eat that are easy to find and, aside from Hoovers/Gueros/Rubys, all over town.