Hi Purdy,
to MoveToNZ.
I can't make out from your post whether you've already done the paperwork chase to get permanent residency in NZ or whether you're just about to start it.
If you are new to the game, as a nurse you shouldn't have any problem getting into NZ, so that's one thing less to worry about. I think the main thing about immigrating and the process involved is to do as much research as possible. You must have been doing some anyway if you've already latched onto the idea of going to Dunedin. That's where Mark (Macfod on here) now lives and they love it there.
Once you start the paperwork, or even before, feel free to come on here to ask questions if there's anything specific you need to know. The whole immigration process is huge with lots of different nooks and crannies along the way, so it's best if you ask questions relevant to yourselves rather than us spout about things you don't really want to know or know already.