Hmm, I'm not sure! I'm also a physio student (I'm doing the Msc pre-reg physio) and thinking of going overseas when I finish in November this year.
I was speaking to our head of physio yesterday and she said that you don't actually need post grad experience to work in NZ. She said that if you do a 4yr BSc (the Bsc physio courses in scotland are 4yrs) or a 2 yr Msc (which I am doing) that the NZ authorities are happy with that. As long as you have done your 1000hrs of placements that should be enough, so I would think that your course would be eligable. (She said the Msc courses are also eligable becase we've already done 3yr degrees before).
I think they say you need experience but actually if you can demonstrate your 1000hrs (plus anything else you've done since) that should be fine
I would contact the NZ PT organisation to double check though before you fill out all the paperwork and pay the reg. fees!
Good luck!