Assuming you have a current JAR PPL when you join CTC, and you choose CTC's Integrated option, couldn't you just convert your PPL to a NZ PPL? Allowing the benefits of your own NZ PPL whilst still doing CTC's integrated route? That way being able to hire for extra time if you want on your own, or to fly to hire for a trip to the South Island etc?
When a "significant saving" is made on CTC modular course, what kind of figures are we talking? (Bearing in mind the "significant" loan for the foundation course anyway! lol)