That is a heck a good set-up Claven.
I have been photographing my militaria collection (medals, insignia, web gear and uniforms) with mixed results. Some are great shots and some are not. It does not matter if I am using manual focus or auto focus for the militaria. For most of the firearms photos i have been using auto focus set-up either on a tripod or freehand for close-ups.
The camera I am using is a Pentax K100D 6.0 mp with an 18-55mm, 1:3.5-5.6 and a 50-200mm, 1:4-5.6 lens.
The lighting I have been using is daylighter mini spirals in pot lamps. An example of the photos taken, which were all freehand, are in my thread for shotguns as linked below. I have been using the Pentax ACDSee program for editing...it not as involved as Photoshop or element yet it works OK, and I used to it now.
http://www.canadiangunnutz.com/forum/showthread.php?t=160120&highlight=shotguns
I tried to use some kind of light diffusion but could not come up with something that really worked easily...though I have not tried the appartus you have. I think i may have to look inot that set-up to do the details on the uniforms.
Excellent thread here.
Cheers