The import units are ok. That’s not the problem. I publish the file, but many of my friends have imported it without any problem. I don’t know why the same file that I’m posting here, appears like this on my computer:
The problem is that your import winds up extremely far from the origin. About 451 statute miles when import units are set to feet. Untick the box for Preserve Origin in the import options and then try it.
AutoCad has no issue with large coordinates but many dedicated 3D modelling and BIM applications do. I haven’t tried AutoCad with advanced 3D shaded views, though. Revit and Archicad recommend the model to stay within 30 kilometers from the model origin. I would guess that even that is a bit too much for SketchUp.