I'm working in Poser 8 (updated to SR2) and I need some help trying to get my lighting more correct.

In the attached image, I'm not happy with the shadows that are coming from the hallway light (visible at the top center of the picture).  I made the supplied glass material transparent and placed a white point light inside the light fixture with intensity at 37.5% and using inverse square attenuation.  There is another one just behind the camera and a third (without the fixture - just a point light) further back behind the camera.

The shadow across the door (and floor) from the light cage is what is bothering me the most and I'd like to minimize it.  I know it will fade a little more with more IBL bounces (I'm only using 1 right now), but I'd like to soften it a little more.

I'd also like the light fixture to look a little more realistic - more like a frosted cover.  I find the image a little strange to have an "invisible" light source in the frame.  I'm going to play with the material settings for the light cage glass and see what I can come up with, but I would appreciate any suggestions.

This model also has florescent fixtures in the cells on both sides of the hallway.  How would I simulate that kind of light in Poser?  I don't know if the fixtures will be visible in my final renders, but I want the additional illumination (and shadows) that these lights would generate.

Render settings are (I'm still in draft mode): Pixel samples 3, Shading Rate 1.0, Displacement 1.0, 2 raytrace bounces, IDL Intensity 1.0, IDL Bounces 1, IDL Samples 32, IDL Irrad. Cache 50, Sinc Filter 2

All materials have Gamma Correcting shaders.

Thanks in advance  for any comments or suggestions.