So, the one little itty bitty thing we forgot was the water softener. Unfortunately, we have zero floorplan available for that. Luckily, we do have a we'll house (well, we will) and it can go in there! The plumber was upset we wouldn't have a hard water line going into our house, but the only purpose for hard water is to water the grass, which we don't have, and we can find a different way to get water there. Yay!
The plumbers aren't as conversational as the electricians, metal guys, and stud masters were, but this was only the first day. I'm sure I'll wear them down in no time!