i am in the process of building my first big tank. it will be a 225 and roughly 72"x30"x24". currently i plan on having 1 tiger oscar 10" 2 green severums 8" and 5" 6 silver dollars ranging from 3.5"-6" would i be able add and keep till full grown 1 or 2 pbass in there? if so which species stays smallest since its only a 6' tank?