The high K's issue is alway a tricky one even if the car looks in great condition. I'm only using it as a second car so I know I wont be adding many to it.
I think buyers still get hung up on the amount of K's showing on the clock, as I am right now - and when I come to sell, I'll have the same issue with potential buyers being put off by higher K's.
I do like the idea of driving one from Queenstown to Auckland.