We've done it, you'll be fine. Weekends can be crowded, but OK for you.
Do the hike to the Hall of Mosses, we saw river otters playing in the stream. A friend thought that the hike was to the Hall of Moses, and was looking for religious significance.
It's sad to see the ridges above the valley that have been clear-cut. Fortunately things grow back quickly in the temperate rain forest.
2008 Itasca SunCruiser 35L
2014 Honda AWD CR-V EX-L