In a new 1 ac Missouri pond with no other fish than those you said were stocked I am thinking the fish will be in the next larger size class than guessed by Sunil. BG & RES will be 5"-7" and CC could be 9-11". Go fishing and report your results. You might be pleasantly surprised. Fish will grow fast in a new pond with low competition due to the numbers that you stocked in 1 ac, especially if the water develops a new pond bloom and it is not turbid all summer from silt / clay in the water. Expect the BG and RES to spawn this spring.