Join the military short term
With a return of service of ten years for a pilot (after completion of training), there is really no such thing as a short term military career in the RNZAF.
Even if there was, you would have to content with flying ancient and somewhat unexciting equipment (on the fixed-wing side at any rate).
The RNZAF is a complete dead end, don't go there.
You also need to recognise that as a raw Massey graduate, you are basically unemployable in NZ without considerable extra experience. You would be far better off going to CTC and getting a EASA (Euro) licence if you have the right to live in Europe, there are several airlines there that hire raw graduates.