Why can't we win it?
We could theoretically, it depends on the risk/reward - I'd say its rather unlikely that we bowl them out in 2 and a bit sessions based on how the wicket is playing and the class of some of their premier batsmen - but it's worth a shot, you just don't want to leave them an attainable total either and leave the series tied rather than get the series win.
I'd say there's about a 10% chance of a result, obviously you have to go for it but I just selfishly want to see Baz go for 300, then 350, 400 etc, NZ go for 700... It won't be happening, but selfishly, just once it'd be awesome to see.