Attached is a PDF file of the layout I am planning to build. It is a three level layout. On the PDF, the black lines are the lowest level, (at 0" +/- above framing), magenta lines are the mid-level at about 7" above the framing, and the blue lines are the upper level at about 14" max above the framing.
The upper level has O-96 and O-88 curves. Track and turnouts will all be Ross.
Mid-level are all O-72 curves. Track will be Ross. Turnouts will be mostly Gargraves.
The lower level are O-54 with a few O-45. Track and turnouts are Atlas 21st century.
Comments and suggestions are welcome.