Advice on a few larger items..

I'll avoid the minefield above, and go to the items in question:

Here, for refrigerators and freezers, the freon must be evacuated or all of the "plumbing" must be removed by a qualified shop (Lines would be evacuated before removal). I have absolutely no clue on New Zealand laws, though. I'd check with the yard.

I don't know what type of station wagon you have, but I can load my Audi wagon with some really large items. Breaking it down will give you a lot more space to do it. I don't know what the removal situation is, but if you can, everything that you can remove reduces the weight. If you remove the barrel, a lot of the smaller parts would fit in there, leaving you with just the panels. A torch or saw can resize them as needed....