From someone looking to leave Oz for a flying career I suggest you do some research before deciding that it's the right way to go for a flying career. Of course I don't know exactly what your aims and aspirations are but Australia is a net exporter of pilots (just browse this website!).
But if you do decide it's for you then some info.
- as you are less than 30 (I think thats the age) then you are able to apply for a 1 year working holiday visa which will at least get you in for a while and possibly enough experience/points if you combine that possibly with a student visa to cover the initial period or even a tourist visa for as long as possible. You'd probably have to go to NZ for a period while transitioning visa types.
- the only problem with this approach is that at the end of 24 months (or so) there is no guarantee of being able to stay if you couldn't then get a work visa which Pedro has discussed below.
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