FOWLR questions.....

[lodidodi]

I'm wondering if I could tap into the intelligence of the masses out there. I've got a 50 gallon breeder tank (36x18x18) with a 20g sump/refugium. Probably around 70-80 lbs of live rock. Currently in the tank I've got an orchid dottyback, a six-line wrasse, a false percula clown, a midas blenny, a yellow tail damsel, and an auriga butterfly. Don't yell at me about the butterfly it was an impulse buy, I had an aiptasia problem (that it cleaned up beautifully), and the guy at the store said that a 50 gallon tank is perfect for that fish. I've since read that it's not and I may have to sell it when it gets bigger unfortunately. Anyways, that being said am I crazy to think that I could possibly add another fish?