yea u can take the snappers out, 3 of them might not be bad but one of them can lay 30-40 eggs lol. I started a project like this of my own last year but with a considerably smaller pond. About an acre and a half. Pickerol had taken over the whole pond, only thing that was left was them, cat fish, and crappies. So last year I stocked it with Bluegills and pumpkin sunfish first and then a few bass, and for the first time in my life ive pulled bass out of the lake. Sunny beds are everywhere and fry are jumping evrywhere. My thoughts would just be to give it a little more time, I know when they drain and dredge ponds around here it takes about a good 5-6 yrs for it to get good. But keep trying im sure some of them are bound to hit. Shouldnt have a problem with all the sunfish in there, thats enough to keep the bass growing and multiplying.