I typically shoot inside under very controlled conditions and I'd like to maintain some consistency in my lighting in a project that will be shot outdoors in the evening. In the studio, I use a beauty dish with honeycomb grid on a boom stand as my primary light source, but being a monolight, it is probably too big and heavy to move about out of the studio (not to mention the need for an electrical outlet.) My first thought is to rent a battery powered unit that accepts a grid reflector and is lightweight enough that an assistant could comfortably support it using a boom arm. (I'd like to avoid using a light stand as it is important to be mobile and operate quickly during the shoot.) I also would need a unit with a modeling light. I'd like to mimic the control and quailty of light of the beauty dish with grid. This is the first time I've attempted this kind of shoot -- does anyone have any recommendations on equipment or approach? Thanks in advance.