Okay so i just purchased and have begun cycling a 90 gallon aquarium for my home. I currently have a 30 gallon already established that is housing a single male jack dempsey around 4" and a common pleco around 4.5". When the tank is done cycling I was thinking about adding a severum, a firemouth, a convict, and potentially a smaller green terror along with my jack and pleco to the 90 gallon. This is my first large tank so I'm not exactly sure where to draw the line in regards to how many fish I can have without overcrowding. Any advice or additional stocking suggestions will be greatly appriciated!