knowing our mentaility, the declaration will only come when there will be no possible chance of NZ chasing the target. That also means that it will be highly unlikely for NZ to get out cheaply in those 20-30 overs.
The only way Pakistan can win is to get out early (yes I know it will give us all heart attacks) setting a target of 200-220 in 40-45 overs so that Kiwi players will take some risk. Obviously then there is also a good chance of Kiwi victory.