Online Lighting Diagram Creator

I'm playing with a really cool online lighting diagram creator today, you can find it here:
http://www.lightingdiagrams.com/Creator

I used it to create a diagram of my current setup, which is:

It's still not perfect, but I'm a little bit constrained by the space I'm in, which is pretty narrow. Also, the walls and ceiling are white, and the floor is white tileboard, so I do have a bit of light everywhere no matter what I do.

Typically, I have to do a lot of floor cleanup in Photoshop, and with the model pretty far from the background, I need to stay above 50 mm or so to keep the equipment out of the shots. I want more space to work in!

Failing that, I do have a few ideas to try out, more on these later.

Here's a shot using the current setup: