I currently have two tiger oscars and one albino oscar, one blood red parrot and one jack Dempsey all small still under 4 inches. In about two months roughly ill have 300 gallon 72x36x27 tank setup and cycled for them. Could I add an electric blue jack Dempsey and a green terror to the tank or would that be overstocked and or to many aggressive fish? I will have a lot of caves made from creek rock and few live plants if the oscars allow them to stay planted anyway. Any advice would be appreciated thanks..