If you're thinking of going the full monty why not do it all here?? I do believe it's cheaper.
If it's the common reason (MONEY!!!) stopping that, I would sign myself up to a class that does all the theory for the exams, commonly done at the bigger flight schools and aeroclubs, a google search will bring up the main players for this. Then move to a smaller one to do the training, as the aircraft are more likely to be available and your training more consistent. Most places in N.Z have an aeroclub not tooooooo far away
Goodluck
