Call with A high on river?

[Ondas]

I've just started playing LHE again after having played NL for a year so excuse my question if it's obvious.

Had no reads on villain except he had just 3-bet me with A7o OTB an orbit ago, as I had been opening quite a lot (with decent hands though) but so far on flop he didn't seem particularly aggressive. Anyway I call flop raise and turn bet (as i picked up a gutshot to go with my overs), but should I be calling river eventhough I missed.
I felt it very likely I'm beat but I've have seen many LHE players bet FD's all the way so should I make this call given I can beat a busted FD here and I'm getting 8/1, even though I have no read he plays it this way?






PokerStars 0.50/1.00 Hold'em (6 handed) Hand History converter Courtesy of PokerZion.com

Preflop: Hero is SB with A[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">3 folds</font>, Button calls, <font color="#CC3333">Hero raises</font>, BB calls, Button calls.

Flop: (6 SB) 3[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">BB raises</font>, Button folds, Hero calls.

Turn: (5 BB) J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">BB bets</font>, Hero calls.

River: (7 BB) 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">BB bets</font>, Hero folds.

Final Pot: 8 BB