if you're not already in too deep ring Nathan Higgins in QLD and see how the deal compares over the tasman... distinct lack of silly ATPL requirements over there. You get an ozzy ATPL out of your studies on a comprehensive integrated course, and then a super cheap kiwi one thrown in on the deal (TTMRA your shiny new casa one) and no future flight test requirement...
plus you can apply for qantas if thats your thing, or chase direct turbine command overseas. Do this now, as a CPL, and rest assured your ATPL is as easy as filling in some CASA forms when you have the hours, you'll get an ATPL by return post (well not exactly, there is the small matter of the ASIC card, go ask an ozzy)
Consider what could happen if you are left high and dry from a future NZ employer - who goes bust, fails you on a command upgrade course, or expands slower than your ambitions. You will still hold 2 ICAO ATPLs and you're employer wont have the ATPL licence carrot to dangle. You will be over 10 grand better off should you end up having to do an NZ ATPL with no employer to pay for it.
That would be my advice to anybody holding an NZ CPL - its a big world out there, shop around.