5/10NL, Turned Straight, river play?

[okayplayer]

5/10NL, full ring. Villain is a fairly regular player, 22/4/2, and nothing special. Somewhat weak. He has ~1775, and I cover.

3 limpers and I complete in SB with 67o, Villain in BB checks.

Flop ($47.50): 893 rainbow

I lead for $30, Villain calls and a limper calls.

Turn ($137): T completing rainbow

I lead for $75 and Villain makes it $275, limper drops, and I think about his hand range here, and put him on 2pr, set, or straight, and call.

River ($687): A

I ...