I may have an assignment to shoot in a trendy nightclub - employees, people at bar, dj's, people dancing, exterior at night (probably not the long lines...) and wanted peoples advice. Nikon D200 and SB-800. Bounce light off a card? Small soft box and use CLS? Direct on camera? I might even have an assistant to run around holding the flash while I shoot (handhold umbrella w/sb800)? Advice?