The WHV is pretty easy to get and gives you the opportunity of both working and visiting NZ, although the main purpose of the visa is for holidaying. You can only work for part of the life of the visa, as I'm sure you know, but it will get you to NZ quickly and with the minimum of fuss. If you find a job you want to stay in you would need a Work Permit and, after that, you can go on to apply for PR if you can or go the WTR route, which is longer.
Your itinerary looks pretty interesting and it's good to see that you've laid it all out in a written plan so you have something to follow. You can alter it as opportunities crop up and your needs change.
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Mother Bear
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