NZ is a quiet place, with lots of good people, lots of outdoor activities. Really good flying to be had (very close to mountains and sea)
Don't know anything about massey. But there are other flying schools in NZ that offer Bav and some in even bigger cities.
As far as immigration....check out this site:
http://www.immigration.govt.nz/migrant/
NZ website:
http://www.newzealand.com/
Hope this helps