Is this even possible? December in New England?

If you do this I suggest you bring or purchase:

A snow shovel

Hair dryer with long extension cord to defrost leveling jacks, electric connections, etc.

A broom and ladder to keep snow off your slideout. Snow will melt and refreeze and your slideout will not retract.

Same for your roof. Most states require roof to be clear of snow and ice before traveling.