5" Bream are going to cost around .90 Each. Thats going to be a little costly. The shad aren't that bad as far as price goes. A couple of loads might run you 3000.00 or so but they reproduce quickly and provide tons of forage. You need to stock them in april or may so they will spawn as soon as you put them in. I don't blame you for not wanting to drain it. I wouldn't want to either. You will need to remove alot of bass to fish it back into balance. My ponds only 5 Acres and ive removed 180 12" bass since last spring and still catch some skinny fish. Ive also added 1 load of shad a 2000 5" Bluegill. So it will take alot of time to get it back right.