One other pointer which I know you havent asked but you did say I have been asked to join a VP group .. .. ..
VP hubs can be problematical and can also be expensive to repair. They will also add to the service costs. In my view a good group will have set aside some funds to deal with these issues and may build on these funds with a contibution out of each flying hour.
Excerising the prop - essentially ensuring oil is reaching the governor is a common additional pre flight check. IMO it is often over done by prolonged excercising when the oil is potentially cold. You will want to be aware of the correct pre-flight checks including a quick check during the walk around to ensure the hub hasnt cracked. Cracked hubs are also not unknown - the first sign will be the red tell tale oil used to help identify this sort of problem.