IMO, this is an awesome trip! If you do it right I think DL can very easily be (believe it or not) the low point of the entire trip.
SF = Alcatraz (GREAT)
Monterey = The Acquarium & Wharf (GREAT)
Big Sur = (BIG SUR!!!!)
San Luis Obispo = The Hearst Mansion (GREAT)
Santa Barbara = "Sideways" trail & you name it (GREAT)
Disneyland = Disneyland (GREAT)
And Anderson's Pea Soup, north of Santa Barbara, given the OP's tag!You forgot Solvang! Windmills, danish and ebelskiver. Yummy!