Just a friendly heads up from a local... Mulholland Hwy by the Rock Store (motorcycle coffee shop) is very narrow/winding. Depending on the amount of people that show, it may be a bit snug with all the motorcyclist racing up and down. Be very careful guys, and please watch for the bikers (for your cars sake more than theirs :P ). Most of the street bike guys are not very good at riding canyons and they often cross the double yellow and/or fly off cliffs. I have been frequenting those roads for 10 years now on everything from street bikes to lambo's and it gets crowded especially Sundays.
Also, there have been a lot more CHP and Sheriff hanging around due to the number of crashes.
Its a great ride and wonderful views! Have fun and I look forward to the pics!