Will this tank be big enough for all my fish?

Right now i have six rosy barbs' five rosy red minnows' one common pleco' five shubunkins' a female betta' and 5 silver dollars in a temporary 20 gallon (they are still quite young). this week i'm buying a 300 gallon fish tank to move them all in, the tank measures ( 96L x 24W x 30H) will this be large enough?