It would be easier if you posted a little more information about how much park and pow you're going to ski and how good you are and any more relevant info.
I had exactly the same problem when i went to do a season. I think this years kung fujas are the perfet ski for what you want. With the schizo binding you can't go worng however if you can afford to buy them in Aus then you can probs afford to buy two pairs of skis. If you only have the choice between these 2 skis i would get the pipecleaners and take them over to Japan then check out what skis are on offer over there and maybe look into getting another pair then.
I'm In the same boat as you. I ski perisher but going to fernie and japan at end of year. I've been looking at the Kung fujas. For what your doing they sound good
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