i did my ppl in new zealand at north shore aero club. i am now in florida doing my jaa atpl's and cpl. i believe you can convert from nz to jaa in minimum hours as long as you have an unrestriced nz licence. hours without the issue of a license cannot count towards jaa. if you intend to work in europe under jaa, i`m not sure if would benefit you to spend 2 or 3 years instructing in new zealand. from my time in new zealand i gathered that was the way over there... ppl > cpl > instruct > atpl > more instructing > single pilot prop work > regional turbo prop job > eventually jet job.....
please excuse me if i am off track with anything i have just said, but if you have a nz cpl already and intend to work in europe, i would get to the usa or europe, do the jaa atpl's, get a jaa cpl, a jaa me/ir, and then start looking at jobs (of course the way things are in europe buying your type rating)......
alan