I haven't been on internet for a while and was surprised to discover this post. That's really cool to see that someone has built the plan! Thanks for posting the photos!
I originally drew it up with AnyRail before I knew about SCARM. SCARM is now my favored track planning software. I need to take a look at Moonman's SCARM file to see what that looks like.
For simpler starter layouts it's a lot easier to build something all flat, and the great thing with 3-rail track is it's relatively easy to change around for variety.