If you are shipping from AndyMark (Indiana) to Los Angeles, ground will take 4 days, Express 2 days will take 2 days, and Express 1 day will take 1 day. These days are monday-friday only.
Note that ground times are not completely guaranteed, so there is a possibility that it will take longer then 4 days. If you order soon, it will probably go out today, and probably arrive Wednesday. If AndyMark can't ship today, and it gets delayed to Friday, you won't get it until Thursday. If I were you, I'd choose 2 day, and not have to worry.
You can use UPS's
Calculate Time and Cost to confirm.
Note that ground shipping time is different for different areas of the country. For example, from New York to Los Angeles is 5 days, while San Francisco to Los Angeles is 1 day.