They will do all right when use your stocking numbers for the bass. I would cut that actual numbers in half. Then make the other half of the numbers Blues. The Blues will be as, or more predatious as the bass.
In other words 50 bass per acre, in your case this would be about 20 bass because you have 1/3 acre pond. Cut this number in half that makes 10 bass and 10 blues. This is how I would stock your 1/3 acre pond.