The current stock would be rehomed before the restocking. The rainbows would just ablut max out the tank to have a school of 6. I don't think I want to limit myself to a school of fish with one showpiece fish.
no rams
no tetras
no danios
no cichlids
and then no bigger schooling fish cuz they take up too much room
well, have fun with your gouramis and bottom feeders, cuz thats all u have left lol?