I loved Hwy 2 and we took it from Mackinaw all the way to Washington and I would recommend it. RV campgrounds are pretty scarce and going thru the oil country is pretty stinky but the road is nice and less traveled and you will find it a nice drive. Make sure you stop at Glacier, and Fort Peck has a real nice campground. Once in Wash, there are some really pretty campgrounds along Hwy 2. If your not going to take the ferry across to the Olympics, I would suggest that you bypass Seattle by taking 203 south and meander down to Hwy 90, and then catching Hwy 18 to 167, and 167 to 512 and 512 to 5 to Olympia. Neah Bay is a strange destination but if you like to hike there are some awesome trails and the museum is very interesting