Hey, Garrett. Waits is an excellent suggestion. You guys also have access to Sam Shepard, so you might try him as well. I would also contact Denis Cooper ("God Jr."), who seems to have more than a little Bukowski influence in his work and he resonates with the Rollins-despised 14-21 demographic, as does Chuck Palahniuk, so giving him a shout out wouldn't hurt either.
Another off the top of my head is Matt Ruff. If you don't have contact info for Matt, you can reach him through his website:
http://home.att.net/~storytellers/
Jack Schwartzman, poet laureate of San Francisco, hell, he's in the store every day. Grab him for a quote next time you see him.
I would also try a few noted L.A. authors/social observers like Bruce Wagner or Michael Tolkin. If Tolkin or Wagner don't feel up to cooperating, let me know and I'll think of someone else but you definitely need some L.A. folk for blurbs.
Say hi to Scott, Don, Gent, and Paul for me.
Cheers,
Rodger Jacobs