Hello.
http://www.immigration.govt.nz/migra...quirements.htm I'm sure you've seen this page. Truly, that is all there is for PR - meet the conditions in the top paragraph (and they are putting quite a lot of emphasis on the character one these days, NOT that I'm suggesting that that is any problem for you), then (1) below, if it's 'time in NZ' that you're going to use. That's what I meant by a 'straightforward' PR application. An application would be more complicated if using one of the other criteria, since there are sometimes questions of interpretation of the regulations, and evidence has to be presented.