As you can see, I'm done with the electrical, plumbing rough in and had someone else add the ducting as I didn't have the time, and my hands are just too big to get in the tight areas.
For electrical, I ran the following:
Run 1 - 14g/15 amp to seven or eight outlets along the lower walls (easy to add sconces later)
Run 2 - 14g/ 15 amp to the can lights (eight), outlet for rope light
Run 3 - 14g/15 amp run just for the projector
Run 4 - 14g/15 amp for wetbar microwave, over-sink outlet, under-cabinet light (easily accesses through the cabinet hole on the right. GFI-protected.
Run 5 - 12g/20 amp outlet for the refrigerator only (per code)
Run 6 - 12g/20 amp dedicated for media equipment (accessible from furnace room for futuer changes)
Run 7 - 12g/30 amp dedicated to electric fire place to go under crawl space door.
This may seem like over kill, but I wanted to isolate some circuits, and figured better put more in that I need. The guy who wired up the circuit box laughed and said he'd never seen that much into on room before. Oh, forget the neat little purpose-built wire stripper/crimp tools for making up outlets. A small pair of needle-nose pliars are much quicker and easier and make easy, round loops in the wire.
1/2" drywall over 1/2" Celotex soundboard
Bullnose corners - attached with mud - not nails/screws to more support behind, and eliminate hollow spaces
Knockdown texturing - done by a contractor.
Again, because there was nothing close to a 90* angle, I had to measure and custom cut EVERY piece of drywall. The studs were not perpendicular to the floor, the walls were at an angle (as much as 2" over 8-9 feet).
Close up of a bullnose corner:
Colors I used. Very dark blue for the ceiling, dark, dusty blue for the walls - all flat. You can see I taped up what Klipsch bookshelf speakers would look like. I'm still not sure what I'll do for main speakers in the end. I will probably build cabinets to the right and left of the fireplace for storage, and to hide tall tower speakers. All would will be cherry. (edit: fireplace sold, went with a oak wood instead of cherry, stain is Zinser "Gunstock" color)
This drywalling took me forever to complete. Yes, there was a certain sense of satisfaction, but if I had to do it all over again I would have a contractor do it.