Looking at The Possibility of Moving to NZ (South Island)

Hi,
Does anyone on here have any advice for someone considering the move across the ditch?
I haven't got the job yet, just considering the pro's and con's before 'pulling the trigger'.
I tick all the boxes for the role, and would stand a good chance of at least getting an interview.
The job would be in the south island (Otago region).
I have been to NZ once (5 years ago) on Holiday, and that was nice and i loved where we went to, but that's my experience in NZ to date.
For those that have made the move:
1) What is the standard of living like? Similar to oz? This includes things like cars, utilities and other such expenses
2) Has anyone lived in the southern part of the south island? Can anyone comment on what it would be like to live there (Otago region)
3) I have noted a lot of people return to oz from NZ. I was thinking this move might be a move to settle down. What are people's thoughts on the area?

Any other pertinent advice you could suggest, i would appreciate.

Thanks.