Ohio isn't anywhere close to that. It takes on average 5 years to reach 15 inches. From the information I'm finding an adult LMB averages about a half pound of weight gain a year in Ohio. About the best I can hope for is about a pound per year.

I've got no problem adding more bluegill. It sounds like a good idea to me. Are you sure 1000 isn't too much? I can see 600 or so not being a problem but 1000?