Sneak 15 miles over the border to see the big redwoods near Hiouchi, CA.
This album (
check the small video at the end - I slapped that together after being there Tuesday)...
http://www.mdvaden.com/album_Redwoods.shtml
Time to camp at the south coast 1/2 hour from the redwoods?
http://www.mdvaden.com/harris_beach_state_park.shtml
Harris Beach State Park and Brookings are tossed in this album...
http://www.mdvaden.com/album_OregonCoast.shtml
If you only spend time in the north of Oregon - here's a page...
http://www.mdvaden.com/oregon_tour.shtml
I'd say, hike Eagle Creek. Not massive trees, but one of the best hikes in the gorge.
http://www.mdvaden.com/eagle_creek.shtml
If you head to the coast, use Hy. 26 to Seaside. Not 30; it's boring.
At mile marker 2 or 3, just 6 miles before Seaside, is the largest Sitka Spruce in the USA. It's the tree here...
http://www.mdvaden.com/gallery1.shtml
1 hour east of the redwoods, is Oregon Caves.
If you aim for the Redwoods, don't burn yourself out passing Crescent City. Just cross the border, check out Jedediah Smith Redwoods State Park. Stout Grove is nice. And east of Crescent City, on Hy. 199, go east a few miles, and look for the Simpson Reed Grove sign
With notice, maybe I can hike with you for a few miles.
Have fun sorting and picking.