I had to tie in the drain line from the tub and sink into the main stack in the basement temporarily, so I decided to use the old spot from the tub and sink before.
Since feeding the PEX has a relatively permanent natural bend to it from being in the spool, I grabbed this dryer vent cleaner thing that I bought a while ago for fishing wires and used it as gauge to shove the pipe over. It actually worked pretty well.
I tied the cold supply in right where it used to be, so that was convenient since it was already 3/4", but the hot is 1/2" from the new water heater so I had to get an adapter for it. As a side note, it's actually really nice how the pipes are colored.
Instead of using elbows for all the turns, I used these support things, since less joints is better (and cheaper). Getting them over the 3/4" PEX was almost impossible though. Maybe I was doing it wrong or there was a tool or something for it.
This is how I laid it out, for everything up stairs. I'll be putting a cabinet in behind the tub in the hallway, so the ball valves will still be accessible after everything is done.
And the sink and tub stub out
When I put in the floor joists, I didn't really think about the fact that putting them closer together than 16" centers meant tools wouldn't fit... So I had to order some short spade bits to be able to run the water to the toilet. At least I was able to leak test everything before then since I had to wait for the bits to come in. Even with the short spade bits, it barely fit, even with my impact driver. The plumbing inspector came by and I passed the rough in, so that's cool.