My portable studio, including a rolling bag for all the wall mount. Everything can be bring all on my. Total tree bag: One camera and lenses, one flash and adapter, one with the wall mount setup (in fact a simple and cheap plastic Golf transport bag !).

Battery pack can support a full day of shooting around 1000 shot at 1/2 Full power. Recycling is very fast. Wireless and can be also setup as automatic exposure with Minolta old but good technology. I`m usually using them in manual setup on each one, and use also the camera in manual mode around 1/100s ISO100-200 F8-11.

For the camera mount, I found myself more comfortable with a standard flash mount with a adjustable angle extension allowing me to to very high in height and also moving quickly in different direction and angle for less than 80$ :-) (Very stable also)

Link to the 17mm Canon TS and more example of using the flash studio setup :
https://pbase.com/nadeauf/nex7_canonts17_40