Gauge,
I'm new to this site and don't even know if the water temp out of your well would be cool enough but have you considered using rainbow trout as you brood feeder fish? I don't know if they would spawn very well but as most big bass fishermen know, one of the reasons those huge bass in the cool Claifornia reserviors are so big is because they fatten up on the 4-8' trout that are stocked each year. The trout are said to be much higher in protein than any of the feeder fish we find in most lakes and ponds. I've been thinking about away to stock trout in a pond up here in Tennessee for years and your idea of an electric well may be the answer. It would give them the constant moving cool water they need. Does anybody else know any more about stocking trout?