FATMAP difficulty grade
Firstly, this outing would be much more reasonably done as an overnight if you can land a Gunsight Lake permit.
From the Jackson Glacier Overlook TH, hike/skin the (potentially brushy) trail to Gunsight Lake, then climb the much less-used Jackson Glacier trail to where it peters out around tree line.
During the final push to your line, watch out for glacial hazards from above and below.
Then—appreciating your remoteness—ski anything from mellow 25° cirque cruising to 45°+ head walls.