As a comparison, I bought my 04 GT with 39k on the clock for £10500, and apart from a minor dent in a wheelarch and minor scratches, it's fine.
The drivetrain and engine is in very good working order and hasn't skipped a beat since I bought it in January this year.
Previous owner even had the wheels refurbed a few months before the sale.
I know how it is to fall in love with a Zed, I did with the first one I saw, but luckily my mate was with me and I walked away from one at a Nissan dealer, which I travelled 130 miles to see btw.
You need to follow your head rather than your heart, you'll end up enjoying the car more as a result.