[JasonB]

I use 3DS Max which is great for presentation renderings, but not easy to use, and not what I'd normally use for working out ideas.

I could email you the file if you've got the software to open .max files, but I should also say that I think that one is 1/32 scale track.

Below is a first idea for a 1/24 track layout using the space on your plan. It's not as pretty as the renderings above, but hopefully more relevant.

I've changed the table sizes at the top and bottom of your plan, to make them the same size, so that you could swap them without changing the overall shape. I've also divided the two boards that stick out to the right in half, to make four. This allows the three L shapes to be interchangeable, again without changing the overall size or shape of the track.

Obviously all of the modules are interchangeable, and there are a lot of possible configurations, but they would change the shape and size of the track.

Anyway, these are just some initial thoughts, we can work on it.