I think the best advice I can give is to have good pacers that know the route and let them choose what they think is the best route on the day. On my round, although I knew the route very well I just went with the flow and handed route choices over to my pacers. We took at least 4 different lines to those i had used before and it added to the fun. Our line up Red Pike left of the main track in fact gained 6 minutes on schedule.
Hope you round goes well and enjoy the day.