weissguy you said 6 to 9 months from fry to frying pan, here in MI. I bet I could possibly obtain 4 months at the most of warm water to raise them, thats if it's warm! (last summer was cool for us so water stayed cooler longer.) So I would have to bring them inside to a set up for them to grow bigger.
Rather than trying to finish them indoors in the fall (which would take massive amounts of space, equipment and work), grow out fry indoors beginning in the winter until temps are high enough in the spring to stock them in cages outdoors. You'll be stocking fish that are already 3-4 months old, which means a 4 month outdoor growing season wouldn't be a problem.
