I think 14k is too much. I have an 01 GTI 1.8T fully loaded with 50k miles and I am selling it for $12k.

I would work with bolt ons for a while if I were you. Turbo back exhaust, diverter valve, cold air intake, turbo inlet pipe, and an ECU would give you a bit more horsepower. And maybe when the stock turbo gives out you can do a turbo upgrade.