Ignoring the track plan for the time being, the placement in the room seems problematic. You have a layout that isn't against the walls, except in one location, which means you can't walk all the way around it. It's a long trip from the stairs to the bottom aisle.
Without dimensions, I can't tell how big your room or layout is, but some of the aisles seem excessive while others are narrow. Does the program let you overlay a 1' grid so we can get a sense of scale?
I would address these issues first. And if you don't mind, post the pictures in the body of your comment so we don't have to open a separate window to see them. There is a box to check for that.
