First off, I am assuming that your variety of J.M. Malone HBG reproduce in a similar fashion as the common GSF/BG hybrid. My hopes are that my HSB can keep my HBG in check, so you are traveling down the same path as I am. Not to mention, your cats will help also. Upping your stocking numbers of the HBG will help feed the HSB and HBC. I would rather you rely on an experts opinion as to what those numbers should be. I am expecting to feed pellets to my hybrids to keep them fat and happy, but only to the extent that the HSB keep the HBG recruitment to a minimum. I would bet that if you Do Not plan to feed twice daily and all they could eat in 15 minutes that your fish may lack in forage to sustain good growth. Keep in mind that I have no knowledge of the reproduction possibilities with respect to HBC. It just seems like your mostly hybrid plan would be better suited for a pellet fed pond. If you where looking to grow larger cats and HSB and were not so concerned with the size of the panfish, then regular BG could be a good solution for forage. If that were the case you could likely bump your predator numbers up quite a bit. This way the BG would feed the predators and the higher number of predators would help keep the prolific BG populations in check. At some point, as the predators grow big, you might even have to add cover for the gills to hide out in a grow to a larger meal size.
I can't comment on minnow varieties other than the FHM as that's all that exists in my little 1/4 acre world.
I look forward to others advice, as I am merely regurgitating some of what I have "learned" here on PB.
