Half of Arizona heads to Disneyland for Spring Break that week, including us. Crowds will be really bad if the park stays open to midnight during the middle of the week.
Touringplans.com projects all of those days as 8-9 out of 10 for crowd size. The only reason that Saturday is an 8 instead of a 10 is because it's a blackout day for all AP holders, even deluxe.