All good advice but nobody has made the point that you must have it revalidated before the expiry date, go one day over and your hours are no good. You can revalidate it at any time in the 12 months before expiry so get it signed now, rather than later. You lose nothing as the next expiry date will be 24 months from the current expiry date.
A PFA coach cannot sign you up, only a person holding a JAA Examiner Authority can do that.