So.... What size curves?
The curves will be min 54" radius. I'm guessing these Sunset SD40-2 will require min 54" radius. With that I can barely get three loops turned around on the narrow end of my layout. Like the first layout though, I will try to hide those "smaller" curves and have much larger curves in the visible areas. The SD40-2 in the pics are coming out of 90" radius curves.