Sounds like an ideal size for sure. I bet you can’t wait for it to be built.
I forget, but I believe that Texas does not easily allow for basements. If your not in a basement, pay special attention to sound mitigation techniques before it is all buttoned up. Some things that are easy to do, spray foam under joists, Roxul Safe and Sound insulation, double drywall with green glue in between or Quietrock Sheetrock. Any little thing you can do now, will help in the future so that your spouse and family will be less disturbed by your constant thrashing of MC2301s at full volume
Of course, your power delivery to your room should have a few dedicated circuits. Hope your build is smooth sailing without delays so that you can enjoy your system again soon.