Um, on days 4 and 5 are you planning on stopping at any of those places or are you going to be content just driving by them? I mean are you planning on touring Hearst Castle at all, walking around Monterey at all? You are going to backtrack quite a bit if you go from Big Sur to Hearst Mansion then to Monterey then to Buellton for lunch. Same question for Hollywood, Venice Beach, and Long Beach. What else do you want to see in Balboa Park? The Zoo alone can be an entire day.

Your itinerary is awfully ambitious IMHO.