In addition, information about inter-employee and worker/customer dynamics would also be helpful. Particularly gender dynamics-- most of the comic shops I've been to have seemed to have one "token female" on staff, and the character I'm writing about is female. If you have amusing little anecdotes you don't mind me adapting and using, that's also helpful.
I'll be away from my computer until Monday starting tomorrow morning, so I might not be able to look at your replies instantly, but I'll make an effort to communicate anyway. Thanks, all.