Mike,
I'm glad you got started on your train room. It has been some waiting for both of us.
I need 042 to run my Premier Western Maryland H9 Consolidation. That would be the largest engine I could run on this layout. I could fit larger curves in the room, but I would be confined to big loops around the room, I'm afraid. I do want to expand the shelves in the corners of my Ceiling Central RR in the family room. I could run larger engines there, and do already.
Thank you for taking a look, and I will be glad if you follow along. I will be glad to see how your layout goes as well. Did you get your wiring problem solved?