Welcome aboard. Your best bet if you are looking to jump start your sandbed right now is to check around your local area for some folks to donate a cup or two of LS to get you going, temps are just too high for standard USPS shipping right now, not to mention shipping is all hosed up with the recent weather events.

Here is a link to our listing of reef clubs in CA, by all means it's just the ones I could locate on the web so if you find any others please update the listing.
http://www.captivereefing.com/directory/index.php?c=155