HI,
We've pretty much decided to move to the cottage and the back half of the basement is almost ready for paint. The dimensions above are still accurate - I'm considering and around the wall style with wider sections at each end of the U ( I can access from 3 sides).
A while back Aflyer posted the attached plan, I'm wondering how it would translate into S Helper track. I have a fair amount and all radius curves available. And no, I never did make any progress with SCARM.