Thanks guys I appreciate your replies. I agree that Air NZ is definitely a much better long term option than Virgin/JetStar/JC even (possibly) without the seniority to obtain a wide body command. Staying in my current LCC and getting a command then heading to ANA or China on a commuting contract whilst still living in NZ is the other option I was looking at.
I wouldn't be surprised if A320 commands at AirNZ take a bit longer in the future as the current 5-6 years are the guys who were right at the start of the hiring wave.
As they say in Aviation timing is everything !