Here is a link to that older thread.
Not really much help though on the scale plans for the terminal itself.
The June, 2018 issue of MRH is also interesting but, again, of no help with the scale plans for the station itself.
It will require a scratch build, and it will be relatively massive in O gauge.
I did do quite a bit of research back in 2020, but I have yet to build LAUPT, although I am still planning to do so.
I do have some scale drawings that I made, tucked away somewhere. I will try to find them. Of course, I model in HO scale, so you would need to essentially double the measurements to arrive at O gauge.
Rich