Okay, so there's a lot more work to do, but we're concentrating on just making progress.
Keith had a little panic attack when he was finished nailing the first (north) wall together because he forgot to allow for cripples in the window hole to support the header. The header is end-nailed in there and pretty sturdy as-is, but after we get the window placed he said he'll rip down a 2x6 (or maybe use a 2x4) to fit in there with the window since the window isn't the full thickness of the wall. Basically, it's all good.
P-style, which totally solves our urine diversion dilemma. The logistics are totally figured out, but theoretically it will be pretty easy.
At Costco we found their bamboo flooring was a great deal and much easier to install than tile, so we're planning on buying some on the next trip to The City. Still wondering what we're going to use on the walls in the corner where the shower's going. But the shower likely won't come to fruition until next year, so we have time.