A preliminary itinerary for the three days towards GC:
San Francisco to LA via Hwy 1, especially Big Sur (I have never been there).
Thai-Town, North Hollywood and a Buddhist temple, or two.
Get our kicks on route 66 - Cajon Pass and National Trails Highway to about Needles.
More 66, in fragments, to Flagstaff then north to the big gully.
I hope to avoid freeways as much as possible. A slow three days with lots of photo opportunities.