if you dont mind giving up some of your nights, get a night job at a bar or restaurant.preferably in wanaka or queenstown, they are closest to the best parks(snowpark, cardrona, remarkables)plus have terrain at treble cone nearby and lots of heli.
that way you´ll get to ski all day....plus you -may- make tips, and get a minimum wage of $12.15 an hour i think.....
wanaka has cheaper housing.i´ll be living there this winter, message me and i´ll see if i can give you any more info...
p.s a lot of bars or restaurants will offer free season passes to attract workers.