You're going to have Residence, so you'll have two years' travel conditions with that, which allow you to come and go freely, running from when you activate your visas upon first arrival in NZ. When the two years are up, you should be able, depending on the time you've spent in NZ to that date http://www.immigration.govt.nz/migra...quirements.htm, to apply for PR (which doesn't have any travel conditions, and will allow you to come and go freely for ever).