[Win.by.TKo]

What throws me off a bit is the BB's call preflop. He did get 3:1. What hands would he enter with?

I would not give the CO raise much respect, but worry about BB. Once BB checked & CO CB, I would be inclined to c/r and adjust based on their replies.

As played, OP left himself with a difficult decision. CO either has 2-pair (AK, A7, K7), a set of 7s, or air. He may semibluff a FD, but I doubt it.

With 900 hands, Villain should also know your VPIP/PFR/AF. He could easily have you tabbed as a FD, weak A, or a Mid PP. Some will take lines to build a big pot then steal with a huge bluff. If I have seen this line before from villain, along with believing he has put me on the above hands, I would think about pushing here. Without knowing if oppt is capable of playing that line, I'd be inclined to fold.

The hardest thing for me to do in Poker is trust my reads, especially in a big pot. It's one thing to come up with a hypothesis, but quite another to put $160 behind it.