If you want to grow good sized sunfish which is a far more reasonable goal than to grow nice bass in a 1/2 acre pond, then I would stock 5 pounds of FHM now. Next spring stock 50 3"-4" LMB, 300 3"-4" BG and 50 3"-4" RES. The albino CC and HSB numbers are dependent on your desire. I wouldn't stock more than 5-15 per year of each leaning closer to the lower number. No need to stock any GSH unless you want to grow larger bass, then stock the GSH around 1-2 pounds when you stock the bass and sunfish. These numbers and timing of the stockings should produce quality panfish, with a few of the original stocker bass reaching decent sizes but most bass will top out around 1 pound.