I'm looking to pick up two small/ medium softboxes to shoot my Sb600 through. I found a kit with a stand, shoe mount, and softbox (16x22) for $109 each. link: http://www.amazon.com/Photoflex-FVX...2?ie=UTF8&s=electronics&qid=1227793927&sr=8-2 My main use would be for 1-2 person portraits, and maybe the occasional family portrait. Question is, is that going to be big enough? I'd likely buy two of them and another SB600. thoughts?