@Ted S Thanks that's super helpful. Hoping not to walk into this shop on Friday completely clueless.
I'm going to stick to single tracks and if I add a train in the future I'll split it down the middle on the 10' walls and suspend a double track down the middle going 25'. That's the idea for an easy expansion at least as well as avoiding adding any more helixes. Basically one train would run a level oval at 9' and the other would travel across the room next to the 1st one while still using the helixes to go up and down.
On the high end I don't have to go all the way up but I would like to make one turn at least in a helix at those two corners.
If you have any advice for a reasonable helix that won't overlap and how much higher that would get me on the high wall I'd appreciate it.
Thanks for all the help from everyone so far!
