What are your goals for the fishery? Balanced, leaning towards the sunfish, or leaning towards bass? Which fish farm do you really believe has the best fish? Regardless of price, I'd go with them...
I would work very hard to get an aeration system installed within 3-4 years, sooner is better, as your asking for a fish kill if not...
In my opinion, 5 pounds of GSH in a half acre pond is too many, no matter what your goals are. I'd keep it around 1-2 pounds of brooder sized GSH and stock them when you stock fingerling, 2"-4" LMB if your goal is for a LMB leaning pond. If your goal is towards sunfish, leave them out.
