I can't help you about the climbing, but just up the road a bit Whistler has several zip line tours that are better than most. (Mainly because they haven't been so sanitised that all the fun has been taken out of them.) For example, the last zip line on one tour is steep enough that they attach an extra pulley line which doubles as an additional braking system plus it generates electricity for the night lights on their zip platforms!
I don't know whether Canadian grades are different (entirely possible!) but in Yosemite I remember thinking 5.11a was around 22. On the other hand, that was for cracks. Faces and slabs did seem harder for their grades! :-)