The design and materials list would not have to change if you went with stucco, you would just have to leave off the siding on the materails list and add wire mesh and tar paper to cover the walls.
Of all the siding materials Stucco is the last one I would ever suggest using. Cracking, mold from splash back, painting, are just some of the reasons I personaly hate it.
In CA your going to have to use full round nails in the framing, corner tie downs and cross bracing in the walls. If you go on the Strong Tie web site it will show you some of these.
I agree 100% with the other poster on poring a footing then at least 2 rows of block above grade. If not the sheathing will rot out, the sides of the building will stay dirty, termites will have a direct route to the building.
Siding must be a min. of 6" up off the ground.