I am still thinking about a retirement (getting close) building on my home property, which this layout will fit nicely. The building is 12x24, with 11'4" by 23'4" of interior space. Easy to stretch the layout to go to 24', and the compression by 4" to 11'4" works nicely (I have tested the track fitting).
This structure has a nice 12'x14' loft area for my computer and office, with an open overlook space that will be cool for watching trains. I will add a front porch, and put this on a concrete slab.