Ripjack, you might need to feed live food to keep those species. My oscar has gotten so picky he will only eat live food.
He will spit out anything that doesn't wiggle. I don't know a lot about those fish. The guys at monsterfishkeepers.com will know those species, but they're not too different. I think about 3/4 of all bony fishes today are part of the perch family.
120 sq ft here is the max without permit. That's 10x12 or about 8x15. I want to design and build it myself, so the shelves and benches are part of the structure, eliminating girts. I'll store my bike there to open up the garage space if I buy the replica SS.