ring around the GA multi operators of NZ... and find out just how much total time they want
I'll save him the hassle DT and tell you now. As far as total is concerned, you only need 750 for the 135 SPIFR requirement. After that the general expectation is to be IF current with the appropriate type rating... even that is flexible though, in most places training is provided either at your own cost or with a bond of some description to bring you up to speed.
Problem is there isn't much of a pilot shortage for the GA operators coming off the back of the training boom of the last 4-5 years. Applicants are many and generally operators will go with 'the devil they know' which is why I would say staying put would be a good option for you.
You would have your foot in the door which is something.