Hi ewwwgross! (can't imagine ayone wanting to be called that)
How high off the floor?? You probably have something between the track and
the steel, couldn't it be made wide enough for two tracks? It would seem much simpler. You would be able to run continuously without having to constantly set the reversing switches.
Is this O27? Sounds like a good project, can you show
us a room layout , even just a rough sketch?
If your locos are AC, I don't think the reverse loop problem applies.