I'd do it... With my harness clipped in, especially at the transitions.
I've done some "tower" stuff, and later on in the day you're fairly relaxed at the top just chillin out at the end of your line. After a certain height, it doesn't matter how high up you are, so if you are comfortable at 100 feet up, there isn't much of a difference.
These guys are in shape for sure, and they must have really good balance, with no near stable objects to visually focus on and the wind up there would mess with you, the top of that tower sways for sure.
I would have to make a lot of money to do the job... Money that I would be putting towards a parachute lol. End of the day just jump!