Say guys, I'm not one to throw stones, but do any of you remember the 2 Rail O scale Pioneer Valley layout project years ago that was featured in Model Railroader? It also became a project in one of their layout books as well. It was ca. 2 ft. wide X 12 ft. long point to to point switching pike with a Red Caboose GP9 for power if memory serves me well.
Like the classic line in the Jesse Stone police series says, "You can only do what you can do." Right on, indeed! I could construct the PV in my compact basement room and still model Union Pacific without a Big Boy in sight! I'd be just as content with an 0-6-0 or EMD NW2 for power as the guys are who can operate 4-6-6-4s and 4-8-8-4s or 4-12-2s on their warehouse sized layouts. Mainline modeling over Sherman Hill, or a Nebraska branchline, both still proclaim to "Be Specific, Ship Union Pacific!"