I tried for a while using Yafray to get the effect I wanted to no avail. I guess what I am looking for is the ability of the reflections/refractions/caustics to light other objects. With so many surfaces in this model it may be impractical. For the updated pic I used Blender internal, and 8 tight spot lights to light the surfaces in a similar way to how they look in real life.
I added a bit more structure to the fixture, and a little color to the walls. I may decide to work on this some more, trying to duplicate the type of shadows the light creates.