The wood floor looks really great!

I should also mention that I simply turned off the glass panes so that the skylight could find its way in to the room.  You can check that in the file I posted.

Obviously your setup is working but 75 fill lights seems excessive.

I am very curious to see if you can use my lighting setup to get results that are acceptable.

in general, when it comes to the final render, I crank everything to maximum and go to bed and see what happened in the morning.  I  it takes 10 hours for the final, then it takes ten hours.

I'm just weird that way and I do understand that 99% of most people are more interested in the short render.

From my personal perspective, high quality results often come from some cost in render time and my computer is a good worker.

-Kix