Finally got the interior of it done. Exterior will lag, just in case we want to add an outlet or something.
Looks like I started over the Christmas break--I think I started a wall long before then, but life got busy and it sat until Christmas, then I had a week to get back to this.
Originally I wanted it fully floating, but quickly realized it had zero resistance to wobble, so I tied it to the ceiling joists. Then realized it still moved too much, so gave in and anchored to the floor. Looking back, I kinda wish I had boxed in the Lally columns now, but then again, it was easier to work this way. I also did 24" centering on the studs, and figured I'd zip in a stud wherever I needed one; I think in the future I'll stick with 16" centers. Also I should have bought the "premium" studs instead of the econo framing ones, had to deal too much with warped studs and stuff just not lining up to make the few bucks saved worth it.
I did the framing and electrical. Wife did the sheetrock and paint. I cut the flooring and help snap it into place, likewise on the ceiling framework--I let her do the measuring, I just did the cutting, as I didn't want to be responsible... She did cut the ceiling tiles and inserted those.
I think it came out ok. Not bad for a first time effort. Eventually I'll shove insulation into the stud cavities and finish the sheetrock.