Wait, so when you say that the only cord that runs to the pack is a power cord, does that mean that it can't run off some sort of battery unit?

A lot of advice on the equipement side, I'll be sure to look into the brands. Any advice on the reflectors?

Also, which photographers were known for simple lighting. Off the top of my head I'm thinking Avedon and Penn. Any others?

I have a digital Nikon D70 + zoom which I plan on using as my digital polaroid before shooting with my Rollei.