I am 6' and have no difficulty. Another of our members has a Boxster S, and he is taller than me (dunna, say about 6'2"??).
As for the golf club criteria - definitely not daft. I have to say that because it was probably the most important criteria I had

. Trust me - they will fit in, a full set in the back boot, with trolley in the front.
Servicing? I have mine done at the local specialists, and it costs in the region of £175 for a service.
North Kent? Try this link, as it will give you more details regarding your most local TIPEC region -http://www.tipec.net/region_southeastlondon.php - they meet in Sevenoaks and I know Jim, their RO, is very helpful. He will be on here soon.