I am all for a No. Calif get-together.
Ferndale would be great! Ferndale is a fun place, and a drive along the Lost Coast area through Petrolia is magnificent, although a narrow road in poor condition. We do it each Sept. in our motorcycle club, and we terminate in The Avenue of the Giants (Magnificent Giant Redwoods along the Eel River.)
The Oyster Farm near Olema on Tomales Bay was wonderful last year!
And for the motorcyclist, have you looked into Honda (any brand welcome!!!) Sport Touring Association - HSTA?
There is a 3 day trip to San Luis Obispo April first - my daughter & I attend it each year.
Here is a link:
http://www.calhsta.org/