7 - 8
FATMAP difficulty grade
For more details, see page 85-89 of Chic Scott's & Mark Klassen's Summits& Icefields 1 Alpine Ski Tours in the Canadian Rockies.
The only thing I will add is that I would recommend both ski and boot crampons for this tour.
We used ours extensively, but I realize that conditions can change...
Probably worth brining them anyways.