Hi everyone... I'm a glamour/pin-up photographer who does a lot of model portfolio type stuff. I normally shoot in my studio or on location, with many lights, never on-camera flash. I often use the clamshell lighting set up with two umbrellas in front, so I can control the light especially when I have a model in a pose that's not a standing straight-up-and-down pose, with the body parallel to the camera. I'd like to start shooting girls in various hotel rooms around LA as kind of an art project, but I can't bring all of my equipment into these rooms. Either I need to come up with a really basic and small lighting set up that I can fit in a case or two (complete with stands) or I need to start experimenting with on-camera flash. Obviously I don't want any harsh lighting or shadows so I'd want something with a large diffusion attachment. I also like to shoot fast so perhaps I'd want something with an extra battery attachment? Can anyone recommend any specific equipment I should buy? My camera is a Canon Mark II. Thanks!