working vacation

hi I am an american I.C.U. nurse that has recently visited NZ and am wondering what it takes to do a working vacation in NZ. specifically what kind of pay can i expect to get while working there? I would like to work in wellington and am wondering if i can afford to do this. in the states i have a contract making 50 dollars an hour and i also work per diem for $37 an hour. do i need to save up to do a 3 month working vacation? will the pay help me with my bills at home , or can i expect to only make enough to pay for my expenses while there. i have 4 years as an I.C.U nurse, and would like the opportunity to see the whole country, both islands while there, i just do not know what to expect pay wise. any info would be helpful.