10/20 deep, lay down second set?

[Iceman69]

10/20 typical tight/tough table, I raised pf with 7s7c to 60 with 2 limpers in the cut off seat, solid Pro on the button rr to 260 limpers out and I called. I got 9k he had about 4k.

Flop Ah 7h 4c I checked Villian bet 300 I called. Turn Kh I led out 500 and he raised to 1500 I called. River 2s I checked and he moved all in with 1700.

Would you lay it down or pot commited with about 2.5-1 pot odd?

Was I trapping at the wrong time with second set?

What would you have played this hand differently?