50NL: AKo OOP hits TPTK in 3bet pot. Standard line?

[RapidEvolution]

Villain is 25/16/2 over 50 hands
I've been running 27/19/3.5 (lol this feels so weird to say)



$0.25/$0.5 No Limit Holdem
9 players
Converted at weaktight.com

Stacks:
UTG (<font color="#0000cc">$11.05</font>)
UTG+1 (<font color="#0000cc">$53.15</font>)
MP1 (<font color="#0000cc">$86.00</font>)
MP2 (<font color="#0000cc">$40.00</font>)
MP3 (<font color="#0000cc">$75.70</font>)
CO (<font color="#0000cc">$10.10</font>)
BTN (<font color="#0000cc">$52.75</font>)
SB (<font color="#0000cc">$19.00</font>)
Hero (<font color="#0000cc">$57.35</font>)

Pre-flop: ($0.75, 9 players) Hero is BB A[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/heart.gif[/img]
<font color="#777777">1 fold</font>, <font color="#cc0000">UTG+1 raises to $2</font>, <font color="#777777">6 folds</font>, <font color="#cc0000">Hero raises to $6.25</font>, UTG+1 calls $4.25

I repop here for initiative on the flop, and I may fold out small pairs.

Flop: K[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/spade.gif[/img] 4[img]/images/graemlins/heart.gif[/img] ($12.75, 2 players)
<font color="#cc0000">Hero bets $8</font>, UTG+1 calls $8

I hit TPTK bet out, and get called. I don't think he's here with a small PP anymore...more likely, IMO are JJ+, AK, and maybe AQ/KQ (but I don't give these much weight).
Turn: J[img]/images/graemlins/diamond.gif[/img] ($28.75, 2 players)
Hero checks, UTG+1 checks

I check the turn here to keep the pot smaller and to snap off a possible bet from QQ/JJ that may think I was just cbetting. When villain checks behind, I figure I'll check and call a 1/2 pot bet.

River: J[img]/images/graemlins/club.gif[/img] ($28.75, 2 players)
Hero checks, <font color="#cc0000">UTG+1 bets $15</font>, Hero calls $15

As if villain read my mind, he bets out $15, and I call.

Is this standard or does anyone b/f the turn? On the river, am I ever ahead or is best case scenario a split? As always, all comments are appreciated. Thanks!