My first pictures (updated with trackplan picture)

[selector]

That's a sweet track plan.

Depending on what your floor is, you could also do a couple of other options. One is to use felt pads, the ones that have a sticky side with the peel-off plastic paper, or if the flooring is vinyl, you would probably need some weight distribution to keep those leveling screw feet from permanently denting the surface. In that case, I would use a 5 cmX5 cm square of 3/4" plywood under each foot.

[Train 284]

Looks great!