That might be a good mix. You have the clowns that like to "wonder/host", the blenny, that would hang out on the bottom, and the goby that is "mid tank/perching" type fish...I would still add the clowns at the end....let the other critters find their spots and then add the clowns. Remember, not all clowns are super bad...lol. I like gold stripe maroons (pretty nasty), but have 2 no bar clowns (hybrids) and only a Tangaroa Goby (Ctenogobiops tangaroai) to compliment my pistol shrimp (another favorite of mine), in my 55. I'm still trying to decide if I want to add another fish, but those clowns hog up all of my attention right now.