Thanks for all the great advise!
I got the perfect pond book a couple years back and just ordered Mike Ottos book. Sounds like I'll need to up my feeding frequency and look at ways to increase forage.
Sounds like I have some more researching to do and need to start getting some structure ready to go. I found some inexpensive pallets of bricks with holes and also standard concrete blocks (with the two big holes) which I'll probably pick up to have on-hand.