Two items missing
I see substantial detail in the proposed itinerary, including a number of secondary items, but I did not see specific references to two key highlights that are a must:
First, the Founders Grove Trail in Humboldt Redwoods SP north of Weott, and second, the Lady Bird Johnson Grove Trail near Orick in Redwood National Park (located on the Bald Hills Road). These two mile-long trails should be part of any visit to the northern redwoods.