Anybody see anything wrong here for my water hookups?

No offense, but it looks like you were bored and wanted to create a project. I would have just bought three brass quick connects and quick connect the hose onto the inlet you need.

If all those were automatic, it would be a different story, but you still need to be there to turn each valve. You walk away from that contraption for a few minutes with anything but the city fill running, you'll have a disaster. So as long as you need to be standing there, just use the quick connects.