BG spawn at small sizes (3-4 inches) when there is no other BG competition (i.e. large BG). Where large BG exist spawning by small BG is suppressed. The concept of stocking several sizes of small BG (2 inch and 4 inch) at the same time is used in new ponds to jump start the original BG population. It does not work as well when stocking into existing adult populations of mature BG. The stocking you are contemplating will be a numbers game to feed existing predators and take some of the pressure off the existing adult BG population. That is, you are going to overwhelm the LMB with numbers of BG so that enough BG survive to enhance the overall population.