Having done endurance before I can give a couple of pieces of advice:
1. Spend time getting the bike set up to suit you all or get individual setups, make note of the changes and then arrange you riding order to make it quick and easy to swap between the setups.
2. Make sure you have a good tyre budget. The team I was riding for didn't and we ended up recyling tyres which, was not a lot of fun.
BTW Tony...endurance racing is what you do when you get too old for club racing
