Not sure when you are leaving, but I am thinking of leading a ride up there around June 1st weekend. If you do go up, keep in mind on the 507 road they have added 2 new rock quarries, so you have trucks running from 6 A.M - 6 P.M saturating certain corners with rocks so be careful. A friend of mine that runs the gas station at the head of the 507 also drives a school bus on that road and says some days it's pretty bad.