I would appreciate some comments about playing the turn in a big pot. The following hand was from a live 1/2 NL game in Atlantic City.
I was seated next to the CO and started the hand with about $220. Three early players limped to me, and I had

. While I would normally raise here, I decided to limp as well because I felt that it was necessary to mix up my play.
The CO (an average player) raised to $15. The Button called, as did two of the limpers. I called, too, and 5 players saw the flop with $80 in the pot.
The flop was

.
Everyone checked to me, and I led out with $40. Only the Button called. He was a very aggressive player who would make big bets at unopened pots and signs of weakness.
There was now $160 in the pot, and I had about $165 left in front of me.
The turn was

.
What play would you make next?