An impressive room, but still room for improvements, hopefully.
There is a File here that might be able to help.
I did not want to flood your topic, so the file contains 4 images. Each is a replica, close, of your room, illuminated in 4 different ways. 0 and 1 show "normal" light sources, 3 and 4 are using Enkinyito's latest beta 1.7 rendering plug-in, which you will need should you decide to replicate it, The .rar file also contains the sh3d file i used to create the images.
None of them are intended as cut/paste solutions, but to give you an idea of what could be achieved. From the file i hope you will be able to illuminate your room to your satisfaction using some of the info, heights, elevations, power settings etc.
Ignore the sources near the french doors, that was a separate test.
Good luck.
Mike
