I setup two small Canon flash units - a 420EX and 430EX set as 1A and 1B. I dialed in a ratio - I think 1:8 and shot with the flashes positioned 4 feet apart and 5 feet away from the subject, controlled by the STE-2. The flashes were aimed directly at the subject. What do you think of the result? By the way, the flashes were about the same level as the subject.
You need to diffuse the light at a minimum, then I would get closer to ambient if I were you.

