whatever your budget is, include the cost of a clutch, possibly flywheel if you intend to map a car with that many miles. You might not need it but you're going to be f*cked if you do!
And for the sake of all things vw let me have a good look over it before you start tinkering 
Yeah that's my major worry too. As soon as I buy it I will want a remap, but then the clutch will go, that means another load of cash!
And don't worry, you and nick will be the car's godfathers
