Bugburd,
Just check how long NZ CAA lets you keep your ATPL subjects on ice, get the exams behind you, go and get a job in PNG, and negotiate on the spot.
Most of the blokes running PNG CASA, in my experience, seem to be very reasonable, Wilson Sagati, the CEO, sets a very good example, pragmatic and sensible, if that isn't a tautology.
Tootle pip!!