I could see such a place being useful for training and gaining experience for new divers. However you might have trouble getting enough money from entry fees to pay for it. Also you're talking about an area slightly less than 2.5 acres. It would be hard to keep it interesting. I've been in quarries that are a little larger than that and after a day of diving you've seen it all. Might be hard to keep repeat visitors. I would think that you need to locate in the very large inland metropolitan areas ie Dallas/Ft Worth; Chicago etc. It would be neat if it could be done sucessfully from a business/financial perspective.