Minor point, but if you are going to "charge a price per kilometer", then you have as much incentive as helicopters to complete the work as quickly as possible.
Edit: Just adding that the video is excellent. I was imagining that these were significantly larger than what you are using. The fact that you can transport them in a semi-trailer like that is very cool.
Edit: Just adding that the video is excellent. I was imagining that these were significantly larger than what you are using. The fact that you can transport them in a semi-trailer like that is very cool.