I guess only thing remaining is winning the lottery [:)] - looks very nice.

Credit for the curved window...

You are welcome, but it is hard (expensive) to find curved/laminated glass in real life.

..sh3d file is only about 70 MB... ...first project ended up being about 135 MB...

Biggest SH3D construction ever for me is < 2,5 MB (compressed). And that is a very detailed project. But I do pay a lot of attention to model / texture sizes. I suspect you could find some elements that account for most of the bloating. ok