One other thing that I don't see in the replies. Don't forget that if you are carrying passengers after sunset, you need to have done a night landing as one of the 3 during the previous 90 days so that needs thinking about in the run up planning.
It's all pointing to a night stay in Exeter (probably without a drink) and an early morning departure. It is worth checking the parking rates there because from my memory, overnight for the aircraft is more than for the pilot.