scampbell,
Google "Guidelines for the Culture of Bluegill Sunfish". Everything you want to learn is in there. FWIW, BG do not handle well below 1" in length and in a culture pond that maximizes production of individual BG, they usually stop growing or grow very slowly at 1.5 to 2 in in length which occurs in about 45 to 60 days. IMO you will be better off stocking them between 1.5" and 2 " and allow them to attain 3" sizes in your much larger lake. Just stock them numerically strong enough to have the survival required to meet their recommendation.