I would reckon you might get it tomorrow or wednesday which is probably faster than from CA regular mail

International mail only seems to enter or leave the US at a few points. If you live near one of them delivery seems to be quicker. My outgoing mail goes to New York. Mail to here normally through Kalamazoo (thats where the customs docket is normally stamped). 1st class airmail in either direction travels same route as priority so you are wasting your time paying the extra $6.75