Chopper, that's a great itinerary! A few tips:
--As TIS said, the tram ride in Palm Springs is great. You'll find the temperature at the top terminal to be about 30 degrees cooler than at the bottom. There are some nice hikes at the top, and a great view of (I think) the Salton Sea.
--I'd be real interested in your reaction to Vegas. As H.P. Lovecraft would have said: "The product of a diseased fancy...not of this nor of any sane planet." But I like it because of that.
--If you're going to stay in San Luis Obispo, go the Madonna Inn and use the men's room. See if you can get them to show you some of the guest rooms. You'll see why California used to have the reputation as "the land of Nuts and Fruits."
--Can your tour operator stop at San Simeon during the trip up the PCH? If so, you can visit the Hearst Castle, truly the Ninth Wonder of the World.
--Look out for huslers in San Francisco. Don't go to any of the strip or topless clubs unless you like drinking "champagne" that's seltzer mized with Ripple.