ATPL
There is one other matter to consider when deciding, and that is if you do intend to operate overseas, whilst the hours you accrue are allowed to be counted towards the ATPL licence issue, in NZ there is the "small" matter of the flight test. Sadly, there is really but one place that is currently doing private ATPLs, and it aint cheap! To give you a figure, your looking at the better chunk of 15K NZ for the type rating/hours/flight test. In OZ, our practical brothers there have decided that 1500 hours, plus 50 night, not sure of the PIC requirement and IF rating is fine, no flight test required. This could almost all be done in a C150, no difference.
And as has been mentioned by another poster, better check with the countrys Aviation Authority you intend on working in, I dont know of many that will accept a "frozen" ATPL, which as also stated, has no official recognition as a licence type in either Oz or NZ.
Good luck to you mate
Nosey