RR1

This is a new layout I am looking at building in a spare basement room. The dead end track in the lower right goes to a living room loop. 
The idea here is that I can run up to 3 trains with no user input or 1 train that covers all the main lines. Basically an upper loop, lower loop, living room loop or combine this all. 
As of right now I am in the brainstorming stage. Only focusing on the main lines. Still need to decide where to put tunnels and bridges.