How many fish?

[doch]

I saw another post relavant, but rather than hijack it I figured I'd start a new one. 90 gal full reef... about 20 corals, 50 snails/crabs, 3 fire shrimp an RBTA, a Sea Hare, 90ish lbs of rock, 33gal sump/fug. I now have 1 gold stripe maroon, 1 yellow wrasse, 1 orchid dottyback, 1 Scooter blenny, 1 Mandarin. How much more room do I have? I'm kind of thinking that I want a Regal, and a Sleeper Goby... and if I could catch it trade in the Blenny for another Mandarin (the one I have is female). Anyways.. looking for opinions.