Good luck. I did a similar thing for Oregon. The "Oregon Ski Safari" (Every Area, Every Lift, Every Run) ... in 2016/2017 season.
Suggestions:
1) Make a logo, put it on some shirts and perhaps on your helmet or ski jacket. Other skiers are very interested.
2) Keep track using a spreadsheet of areas, dates, lift, runs, etc..... make some charts.
3) Do a daily report on some media of where you went, and how it was.
4) Don't let the quest to "finish" or "complete" get in the way of having fun skiing.