I'm an east-coaster heading out west for a roadtrip in September. I've got about 6 days to drive from San Fran to Seattle. My plan is to stay mainly on 101, shooting off a couple times eastward. I would like to make it up to Portland/Columbia River area or Yakima by the 4th or 5th night, as I plan to do some white water rafting. Hoping for some suggestions on sights to see, places to stay, and activities to do along the way. Thanks!