G'day Sam,
Do you have the right to live and work in New Zealand? Have you investigated work visas and so forth? That will be your first hurdle.
Have a look in Dununda, Godzone and the Pacific Forums for more guidance regarding work.
Generally, low houred pilots in New Zealand head to Australia or do instructing work and the like. It is unusual for low houred pilots to get taken on in an airline.
Then of course, there's the licence conversion, however, that'll be the least of your hassles.
Good luck.