The track is about 30 minutes north of me and I can make niagara falls in about 5-6 hours if I don't get any traffic in Toronto (rare).
I've been to the track but haven't ridden on it yet. It's pristine. The layout is long and fast. Some people say that there are some trees and rocks too close to the track. Personally I tend to ride on the track rather than in the bushes so I doubt it will bother me much.
I've heard the pavement is smooth as glass.
I can't wait to get up there myself. If you make it up let me know maybe I'll swing by.