Nice choice. You may want to condiser getting an external battery pack for it (if you haven't already) - it tends to eat batteries very quickly. I have the Quantum Turbo which works quite well with it. Depending on how much area you're trying to light up, it'll last 300-400 shots on a charge.
Primary: Canon EOS-5D Mark II; Secondary: Canon EOS-1D Mark III; Back Ups: Canon PowerShot G7 and Canon EOS-1N