NL50 AK TPTK on monotone board

[checktheriver]

SB seems fairly loose preflop, like 40/20 over a small sample size. UTG is unknown.

First do you repop this preflop after SB min3bets ? With UTG still to act it didn't seem like a great option, but I'm not sure.

Flop bet is standard, I probably have the best hand and want to protect against hands with one club like QcQx that are not going to pay me big unless a fourth club hits anyway.
I think I should have fired this turn.
As played do you call the river ?

Poker Stars, $0.25/$0.50 NL Hold'em Cash Game, 6 Players
LegoPoker Hand History Converter

UTG: $38.40
MP: $32.95
CO: $43.65
BTN: $55.80
SB: $53.60
Hero (BB): $54.60

Pre-Flop: A[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/spade.gif[/img] dealt to Hero (BB)
<font color="red">UTG raises to $2</font>, 3 folds, <font color="red">SB raises to $3.50</font>, Hero calls $3, UTG calls $1.50

Flop: ($10.50) J[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/club.gif[/img] (3 Players)
SB checks, <font color="red">Hero bets $7</font>, UTG folds, SB calls $7

Turn: ($24.50) J[img]/images/graemlins/diamond.gif[/img] (2 Players)
SB checks, Hero checks

River: ($24.50) 2[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">SB bets $25</font>, Hero calls $25