Rebuilding my layout

Looks like it has been pretty quite here for a while, so I guess this is a good place to post my newest layout plan. This is a 4 ft Wide by 4 ft "L" design where the sections are only 2 ft deep to make most of the layout reachable. Flat land with a small town in the inner loop, and farm country in the bottom section. Not looking to do much switching, just watch the train go round and round. The outer rails are within 2 inches of the edge but I will have a short (1 to 3 inch) sky board around most of the outside.