I have no idea where you got that cans are req'd in Yose
in Jan and Feb.

As for the cold... I grew up in Green Bay...
Everything I have said or not said has nothing to do with
the cold. Sierra is the Bahamas compared to Wisconsin.
It's the simple fact that snowshoeing is
easily 4x harder than hiking on a nice trail.
If you haven't shoed any then you are in for a rude
awakening. Keeping your pack as light as possible will
greatly help. Not using monsterously large shoes will
greatly help. And busting trail by yourself... you
are gonna go "wtf was I thinking".
You can maybe do 10 miles a day... maybe. a big maybe.

Wish you a lot of luck.