Continue pushing?

[HermannTL]

Villain has been 46/14.3/0.9 over 168 hands. To my surprise I don't have any notes on his PFR range despite that 14.3. As an example of his style I saw him cold-call with A9o and then call a bet on a flop of K22.

PokerStars $0.10/$0.20 Limit Hold'em - 10 players
Hand Converter Tool from DeucesCracked.com

Preflop: Hero is MP3 with K[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img]
UTG folds, <font color="#FF0000">UTG+1 raises</font>, UTG+2 folds, MP1 folds, MP2 calls, <font color="#FF0000">Hero 3-bets</font>, CO folds, Button folds, SB calls, BB folds, UTG+1 calls, MP2 calls.

Flop: (13.00 SB) A[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#FF0000">UTG+1 bets</font>, MP2 folds, <font color="#FF0000">Hero raises</font>, SB folds, UTG+1 calls.

Turn: (8.50 BB) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
UTG+1 checks, <font color="#FF0000">Hero bets</font>, UTG+1 calls.

River: (10.50 BB) 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
UTG+1 checks, <font color="#FF0000">Hero bets</font>, UTG+1 calls.

Final Pot: 12.50 BB

My question here is whether it seems to make sense (seems +EV) to continue to be aggressive here in the absence of resistance. (I would have folded the turn to a c/r and I would have agonized over one on the river. I don't think this guy would c/r as a bluff, very few would at this level.)