Update: I'm going to stick with something similar to my most recent update. The third line will be a double reverse line, all elevated. Now the next step! I'll be adding DCS and wiring in the star pattern as suggested. I'm powering the three lines and the yard section with my z4000, which should be more than enough power for a layout of this size. Any suggestions as to where to place the power drops? I would think two or three for each mainline and one for the yard would be sufficient. I'm debating making the inner ground loop (connected to the yard) DCS control only instead of allowing conventional engines on that line as well. That way I can save time and effort in wiring So, correct me if I'm wrong, but I won't need to electrically isolate any of the siding in that case, correct?