That's pretty sweet.
In a difficulty scale of 1 to 10, what would you, the creator, say it is?
I'd give this an 8/10
Good amount of difficulty, a good variety of challenges, but could get a bit too frantic with more than 1 or two people on the course. I'd also suggest a bit of a guard rail for the ramp parts, but you don't have to.
Overall, nice job!