Still progressing nicely I see! I don't know if you've seen the thread where someone put a hessian style screen around his cfls (it was a sort of mesh like hessian that let plenty of light through), but you could utilise your lower cfls (even if it's only with low wattage just to pump a little into the sides) using that technique.
I'll get some shots of my box (it's a bit ghetto!) in my grow diary, I'm a strong believer in CFLs and particularly throwing lots of wattage into a contained space and reckon you have it bang on with your design. I've also got a webcam in there (saves having to go in there to check on progress, etc and I also capture timelapse with it), just out of interest what software are you using to be able to grab multiple cams? I have a usb hub in the room and another cam, so quite like the idea of being able to get 2 views. I've got a usb remote thermometer in there also, so I can be mr ocd about controlling the temps for my ladies.
Looking forward to updates