Sounds like your substrate is fine...just add stingfish!
It's really funny, back awhile, goblins and cockatoo wasps used to show up in one of my local LFS quite often, but now I hardly ever see them. I guess with the economy, the LFS's and wholesalers both are sticking with the "meat and potato, quick turnover" fish...clowns, tangs, etc.
Jarrod,
Your fish is looking great!