Deuce,
Looks like a good start to a fun layout, some similarity to the one I'm working on, also 4'x8' overall. One of the issues I'm struggling with a bit is space for operating accessories, clearances between trains, buildings, and scenery. Temporarily building track, running trains, placing things, etc. is being a help to me with trying to figure out where stuff will ultimately go, and how much fun it will be to run.