Phil Stratford

Hi all I am new to Australia and planning to go to Japan end March for a skiing break in Japan, first time there. I will be going with wife and two kids, all good skiers and used to Val Disere type skiing. I want to go fairly close to Tokyo as I only have a week. Can someone recommend Shiga Kogen or Hakuba as the place to go? Will the snow still be good or is it a waste of time. Any tips please? Cheers Phil the Pom.