Not doing the ride, I should have been in France doing the Marmotte, but that did not happen. It is run by the club I am a member of so I think it will be very well organized.
The route is a very good one. I assume you are doing the long route. No climbs that will scare you after you have done the Pendle 600 ride. Worst is Coal Road then the climb out of Settle. After the climb out of Settle there is a great long but gentle downhill stretch to Airton.
Are you doing the Sportive organised the the Otley CC later on in the year?