And, that brings us to the next point: the yard.
On my east end at CP280, for example, I don't have room for a full integrated yard lead - so I planned for a stub lead. It's not as optimal as the west end's lead but it is much better than using the main line for each drill. The mainline is the two tracks on the left, and the lead is the right-most track at the bottom of this diagram. It continues for about 6 feet off this diagram, on a curve away from the mainline. (Locomotive servicing is at the far bottom right.)
I laid a sample piece of track on the fibercloth to test the cloth's suitability as a subroadbed. I will let you know how that works out. Putting the yard down, or at least getting the ladders in place, will be the next step. In about one month I will also make the big investment in a DCC system.