Cool result! 😎

About any domes, geodesic etc... the master one is TaffGosh

.dae can't b uploaded but if you zip it you can upload the zip file.

Nice work so far. Long journey ahead! It is a beautiful building inside and out.

Very nice!

More daylight ...

cycles_05p.jpg

Looks like an optic illusion. Great sketchy look.

Some more shapes, and the basic components if somebody else wants to play ...

basic components

playing around

From time to time I go back on my model of the Colosseum valley. Here is a new version of Venus and Rome, and the half dome of Maxentius basilica. The half dome was done thanks to the FFD tool.

mass_2p.jpg

mass_3p.jpg

v&r2p.jpg

Welcome and as ken said, a good start.
@ken: Kepf may has his own plans when importing to poser.
Even better kepf, you could export the obj from poser to blender and render there (much more options), you may want to convert obj to 3ds (blender) and export to SU free. I like imports-exports, I'm good on this LOL
But the real problem is the exports from SU (especially the free version). The pro version has a decent obj exporter OK. Try to find and use the SU6. It exports to google earth (google earth 4) format. Rename it to .zip, unzip it and you find a decent collada file at last. Use this. Don't expect much from textures though, the reversed (bluish) faces are a problem.