AE, I have some suggestions. It�s ok to make a building in it�s real scale. But I think in this case, it�s better to make the model bigger. This could help in visualizations.
Another thing. Try to edit the model once in GE. Open the folders and erase the Geometries of black lines. So the model looks better.

Try this things and for sure this is going to 3D Space NL...