have you considered actually talking to them?...
ring lots of GA operators in australia. Not a handful, I mean many dozens. If you still feel motivated to go after getting so many knockbacks, often very rude and unprofessional, then you might make it there. If what you hear on the phone puts you off, go do a c cat and stay in NZ.
in general, you'll encounter many very bitter and rude individuals in GA on both sides of the tasman. Don't expect warm fuzzies from any initial phonecalls, with your logbook you're literally a dime a dozen. in my case I got an earful of swearing on numerous occasions from the Australian CPs, who seem to throw a little tanty a lot more than the NZ ones
Never let anyone elses personal issues taint your enthusiasm