Bob :

That is good news . If the bass and BG are eating then stress level is not to high. I would watch the early am splashing . If it is feeding that is good if it is fish breaking the surface for air then may be a DO problem. Late night /early am is when some DO problems are at the worst.

Sounds like you have enough forage for now. I would put a couple of pallets in with the fatheads. They may spawn in the pallets and provide some forage down the road. If there is no DO problem and enough forage then no need to figure the #/weight of fish or water vol. Good luck . ewest

ps tomorrow I will review pics. with comments on cover/lake design etc.