I would like to start working with some off camera lighting and am trying to put together the best set up for my immediate needs so I need your input.
I do not have an assistant and can't foresee having one very often. Most of our weddings and shoots are outside on sand or uneven ground. Often we have to trek a bit so compactness and speed of set up is important. I also need to pack it for relatively small airplanes with fairly tight restrictions.
I currently have a single Canon 580, Canon 20D. I do not own a tripod or monopod etc.
Budget is, of course, an issue, but I'm actually pretty flexible on this.
Not sure what else I can offer to get the best advice for my needs, but please let me know if there's something I can offer that will help you answer me! I will be doing all of my shopping in the US, if that matters.

