Randy,
Add 400-500 more HSF. They'll grow fast, your catch rates will be much better, and you will have enough fish to help control the minor amount of Fx spawns you get from the hybrid sunfish. If you want to speed things up a little bit, spring for a feeder and feed 2 or 3 pounds of Aquamax daily. You'll be amazed how fast those fish will grow. You'll be catching 8-10" fish next fall.

Teach a man to grow fish...
He can teach to catch fish...