Yes, indeed, good to welcome some fellow Kiwis to TF.
I'm an Aussie now, but born and bred, and spent first 42 years of my life in NZ. I moved to Brisbane in 1989, bringing the Gazelle 26 maxi trailer yacht I bought off the manufacturer, (his demo boat), right there in Wellington, over with us. Used her as an extra container as well. Main reason I chose the Gazelle was they breed 'em tough there - fly spinnakers across Cook Straight, eg, so I knew it would be real seaworthy.
Finally sold her and went to trawlers here because Moreton Bay, with all its islands, shoals and channels - not to mention the blazing sun, and heat - was not as kind to exposed sailing types and boats with keels, so joined the dark side of powered boating - loved it..! Still miss the sailing though.
Plenty of nice places to cruise over there. A circumnavigation of NZ will take some time, for sure. Although not large as a country goes, has a very long coastline, so good luck with that. Three places to make a must go to - Hauraki Gulf, Bay of Islands...but even more-so, Stewart Island. That place is a paradise..! You could spend months just doing Paterson Inlet. And the fishing...☝️
Enjoy - and yeah, we expect photos...