At this point I'm tempted to just toss everything back in said closet, shut the door, call it good and move on to the next project.
I got the wall bracings up just fine. Mostly. Except where I just missed the wall studs, which apparently aren't as straight as they could be. That whole measuring thing? Didn't work out so well. I mean, if the stud is X inches from the corner in one place, one would think it'd be the same all the way down the wall, right? Not so much. Meaning we ended up moving a couple of the leveling braces over a few inches. So we had to drill new holes, whereupon I promptly broke a drill bit because I hit something (no I don't know what). At which point I seriously considered throwing the drill at the wall because that would definitely have helped.
But wait! There's more!
And did I mention that the closet walls aren't perfectly square? Uh, yeah.
Hold up. I finally figured out what this reminds me of. That book, If You Give a Mouse a Cookie. Except this would be the "If You Give Lisa Some Power Tools and Enough Time" version.
I think I need a new hobby.