Thats somewhat of an annoying commute; avoid El Camino Real, which means you'll have to ride in one of the side roads through the industrial areas (kinda poor road surfaces, plus ugly) or go a little out of your way and take the scenic route through Alameda d las Pulgas (which is hilly)

I say go with an all rigid(no shocks) cromo steel mountain bike with slick skinny tires on it 26x1.5-1.25
good for the hills, good for the tarred over cracked roads, decent speed, comfortable, cargo capable