Oops for something!
I forgot about the hidden siding. Mainly, because it is hidden! I widened the track centers to 3" which still let's me use the 5" board I had cut. I also added the rerailer at the end and moved the turnout closer to the edge where I can get to it for maintenance.
I also added a clearance note of 4.5" and a few other touches. Its ready for On30 if I ever want it.
The three way turnout yard won't work in On30, but I don't plan to keep it. I'll turn it into a two track yard instead to save scenery space.