Replying to Help!! Ski Trip To Japan- 13/14

Sup NS-

 My friend and I are planning on doing a two week trip to japan next season. The problem here is that we have no idea about the north island of Japan in general. All we know is that the snow is epic in the north and thats pretty much the only reason.
My question here is:
1.The best places, resorts, mountains? (we would like to ski the places with best powder but would also appreciate some parks with sick rails.)
2. How much does it cost?(Flight, hotels, food, etc.)
3. Is it worth the time and money?

Thanks for helping, NS- I'll appreciate it.