I'm from Wellington also. I've seen your photos from the last time you were down there, and I'm sure you'll find locations to take equally as great photos anywhere in the south island. If you're going to be based so far south, the Moeraki Boulders to me seem like they'd suit your style pretty well, and would be about an hours drive north of Dunedin. From the photos I've seen of them, they look pretty spectacular.