20-40 Flopping top two

[Analyst]

20-40 at Bay101, and I'm in my first orbit at the must move table. Folded around to the CO who open raises; I've seen him around but never played against him so have no read. Button (as it turns out is a very strong 2+2er, though I didn't know it at the time) cold-calls, SB folds, I call with QJs.

Flop is QJT two-tone.
Button checks, I bet, CO raises, button calls, I 3-bet, CO calls, button calls.

Turn is a 9, still two-tone board.
Button checks, I check, CO bets, button folds, I call.

River is a blank.
I check, CO bets, I call.

Comments? Or is this pretty straight-forward?