Clutch: My 2012 Evora S had done 68K miles when I sold it, and the clutch still hasn't needed to be done 16 months later (so maybe another 6-12K miles on top). The car was used for all kinds of driving, and honestly speaking it was showing no signs of wear.
The Pistonheads car is ridiculously close to you, in the grand scheme of things, so if it were me I'd be taking the car for a test drive (show him this thread if he thinks you're a tyre-kicker). At a guess, you're already on the decision track having asked for our thoughts...
IMHO there is no such thing as "the right answer" with regards to trim levels, gearboxes, rear seats (sorry Andy) etc etc. Sure, there's popular wisdom, and a general consensus on these things - but, considering most of us on here don't drive 911s so clearly aren't that arsed about this, we're collectively strangely insistent on what the "right choices" should be. Which has always mystified me somewhat.
Buying a car is such a personal thing. If you like it when you try it, then buy the damn thing. No-one will berate you for making the "wrong" choice - certainly not on here - and you will have a car that you have chosen, not anyone else.
Advice is good. Experience offered is good. The choice is yours!