Ax common marginal situation

I'm at work, but it seems I had dozens of these lately, so this is made up.

Consider Button to be a mid-high VPIPer with low-mid aggro (e.g. 37/9/.9). Nothing tricky, but generally going to far with his hands.

.5/1 5 players
pre-flop: Hero is CO with A6o.
1 fold, Hero raises, Button calls, 1 fold, BB calls.

Flop: (6.5 SB) 7 T 4 (r)
BB checks, Hero bets, Button calls, BB folds.

Turn: (4.25 SB) J (2-suited)
Hero ???

If our plan is c/f, and it gets checked behind, what is the plan for the river UI?


It's great to be last to act with A-high on these boards, which I gather is why we pfr from the CO to buy the button. These guys never give it up, and so it sucks to be /not/ last to act. Is there any standard line here, when we have no position and no reasonable hand?