Well, I got my route off mapquest so it must be right. If I crossed the border at Abottsford, a twelve hour drive from Calgary, it would still take at least 15 hours to get to Deer Valley. Just ask Bull.
The drive through Idaho is equally as scenic as central WA. and quite a bit faster. And if I am really in a rush, it is faster to take the interstate down through MT.
My route through ID. takes me down 95 from Bonner's Ferry to Boise, where I cross into the SE corner of OR. and then into NV. The whole way through ID. I am never more than a few miles from the WA. state line.
This is hardly the fall Semlin. I could meet you in or around Cranbrook. It's not like we're talking a two week trip here.