As much as I've always love the ride from Redondo to Santa Monica, during a holiday weekend it's going to be killer with foot and car traffic.
Just a suggestion - try doing PV in different directions. Maybe first day do PV going up through Lunada Bay (sp?) to San Pedro, and back around through Rollings Hills. Next day try going East through Rolling Hills first and take Hawthorne Blvd back down to PV Drive. Just so pretty up there. I used to extend my rides by just taking one side street after another especially through Lunada Bay.
Have fun. Should be nice there this weekend.