Many areas in Washington have more mule deer than the northeast corner, which is where you are talking about. You asked for opinions, that's mine. You might want to talk to a biologist if you really want to know if it's "worth the drive." Mule deer used to be pretty good there, but that was about 15 years ago. It's just at tough area to hunt. Thick and steep. Very little open country where you can glass. Some local hunters do kill some good bucks out of there but more often they don't kill anything.