If at all possible, I'd reverse the trip direction. Southbound on the Oregon Coast is our preference. You're on the ocean side of the road and it's easier to get in and out of the numerous scenic pullouts.
You do have a lot planned for a two week trip. You'll do a lot of driving to see Oregon, LV, Grand Canyon, Hoover Dam and Santa Barbara and Disneyland. I'm guessing a 4000+ mile round trip and parts of this trip (esp. the OR coast) isn't fast driving. If two weeks is your limit, I think I'd skip Grand Canyon and Hoover Dam for this trip.
