It's been over a year and I've been constantly thinking (on and off) about what the heck to do still. In the mean time, I've been building a plane, the room had been a catch-all for tents and other camping gear and a cool, relaxing and quiet place to sleep in the summer. I've revisited all the layouts, scratched them all and rebuilt something I think I'll finally be happy with.
This Includes my clockwork layout above, that'll go underneath the center passing siding or one of the side units. In this layout, I can see running 2 or 3 trains, some switching and yard sorting duties, at least three places to stop, the opportunity for lots of industry and an interchange track on the bottom left that I have no problem knocking a hole in the drywall for. I've removed both the french doors to the room so the tables shouldn't really be a problem if they stick out (and they do). The top two curves on either side of the passing siding are O27 42" radius, just because it'll make for better running, but the rest of the curves are 27". I think this'll be something that I can be happy with. It should be fairly simple to wire, running a feeder right underneath the main with automated signals and the like. I'd still like to do that majestic trestle or bridge in the corner too.
I've also attached the ceiling layout - was just thinking simple would be best for this one. A loop of O27 with 42" curves. I'd like to pick up the 6 long sections I need and start on this one first just so I'm not knocking dust on everything below. The thoughts for suspension are 1" floor (ceiling?) flanges screwed to the joists with 150ANSI light duty pipe nipples and an elbow, with the same wooden bridge decking I was thinking from before. Just a nicer place to run longer locomotives and trains like the baby madison's, and my Marx 21's, using the spare CW80 I have.
As always, open to thoughts and comments! Thanks for looking, stay safe.