try calling the aloha warehouse in japantown. they sell ukes, hawaiian snacks, and if i'm not mistaken, leis. and if they don't sell them, they'll definitely be able to point you in the right direction.
Also, I called them and the lady said she can preorder almost any lei I want (except for Mock Orange leaves which can't be imported to California).
Thanks for the reply!
awesome, glad they can help you out! and while you're there, try out Honu's bar and grill next door. it's owned by the same family that owns Aloha Warehouse. the food is gooooooood. live hawaiian music on the weekends too.