Joe, I would have waited longer till when the interior spaces started to glow (not just the light sources).
I am not sure how I feel about having that happen, seeing more of the inside; you have to give me a few days to disconnect from this version before coming to a conclusion on that. However, if this was the main shot, I probably would have waited longer. The main shot was the interior, which I had to run inside after this and set up (not through post yet), and the backside (see below). They were much more important than this image, which was a novelty to myself and the architect.
With that shot (the one above), I was more impressed with how hard I could push the file and still get a very usable image. I have tried and failed several times with my Canon gear to shoot a similar image with the sun behind the building while still being able to pull out the details in the shadows.