You are right James, that "testing" was done very quickly and I had no time before to plan this. One reason is that our new baby was born on the 14th this month and with now 3 kids time isn´t easy to get for myself. So when all 3 kids where in bed I grabbed my lights and the camera and called a friend that came with me "if something happens"

Interesting point was I never went offroad in the total darkness, so this was new and it showed me that some things must be done before riding in the dark.
For the camera, next time I´ll take my sigma and do the complete settings in manual mode.
For my future light setup I´ll go with a pair of these lights, replacing the 2 visionX. One of the visionX got broken (light dimmed) during the test.
http://www.axiomledsolutions.com/dual-row-led-work-lights.html
Interesting is that these have some kind of optical lens:

For the led light bar I´ll go with a 120W 21.5 Inch version with spot beam mounted to the roof carrier between the Hella FF75 and the 2" 12W 4led work lights.

Detail shot of the lens:


The lights will be separated switched in pairs. I´m thinking of implementing a separate kill-switch for shutting them off all together. For all the wires I need a additional sealed connection in the roof.