Southern Washington state is really nice, but the commute as a new hire will put gray hair on your head. There are quite a few SFO commuters up here and they're all senior. I've got twenty years here and I sometimes miss out on the 737 jumpseat.
The difficulty is offset by you having more control over your schedule faster because of the movement in SFO.
PM me if you'd like details about Camas/Vancuover/Washougal.
IAD is worth a very close look too, with schools being the challenge.