I've got an AD600 and 2 AD200s, as well as the dual head adapter.
I have a small kit bag I can take with me pretty much anywhere.
28" light stand bag:
2x Nano light stands (lumopro and Phottix), 7.5 feet, folds up to 21"
2x AD200 with fresnel and bare bulb heads
Phottix 33" double folding shoot-through umbrella
AD-S7 softbox (18") with grid and reflector plate
Westcott APollo 28" softbox - this one doesn't fit in the bag. It sticks out about 5-6 inches so I can't zip the bag completely closed. Debating on just picking up a Godox 32" umbrella octabox. I think that would fit fine in my bag.
When I need heavy "firepower", then I have the Xplor 600 in it's big ass case, extension head, etc. Also have a couple 10 ft Flashpoint auto stands (automatically expand and retract the legs when you pick them up, set them down), and a 13 ft light stand/boom.