IMHO, i don't think any of FR's products are truly 4-season.
you need something like Arctic Fox or similar true 4-season RVs, to winter in Idaho.
Dan-Retired California Firefighter/EMT
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package