For what its worth I say best of luck to them.
I have no doubt a lot of the planning will have to be done on the back of a fag packet. On the strength of what they hope to achieve there will be problem after problem but that is what adventure is all about.
Flying 4 Gazelles from Netheravon to eastern Turkey was a yearly jaunt for some and how I remember the problems that caused, but what fun!
After some very heavy planning, (we got to 23,000' give or take a few feet, in a service aircraft with 3 on board (Thanks Boscombe)) I once gave a presentation to a former Director about trying to land a Gazelle on top of Everest, still reckon it could be done! but he didn't.