The Cascades are well under 90 miles from Seattle. A complete trip to the Cascades and back can be done in well under 250 miles, and regen breaking will be your best friend on the way back home!
I'll grant that going to the Olympic national forest is 122 miles one way, so some range issues there for sure.
> AV4 Prime with 600 mile range is the dream,
Boise is 500 miles one way!
The entire point of living in Seattle is to that nature is insanely close by. (Sure as heck isn't for the friendly faces on the street or the affordable tasty food!)