$50 NL, TPgK paired board, Turn Play?

[BackdoorQuads]

Villain is 30/10/1.5 over about 150 hands. I think I should have bet the turn for value and checked behind on the river if called. As played, I'm not sure what to do on the river.

PokerStars No-Limit Hold'em, $0.50 BB (5 handed) Hand History Converter Tool (http://poker-tools.flopturnriver.com/Hand-Converter.php) from FlopTurnRiver.com (http://www.flopturnriver.com) (Format: 2+2 Forums)

SB ($84.15)
BB ($55.40)
UTG ($32.70)
Hero ($50)
Button ($10.50)

Preflop: Hero is MP with K/images/graemlins/spade.gif, T/images/graemlins/spade.gif.
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $2</font>, <font color="#666666">1 fold</font>, SB calls $1.75, <font color="#666666">1 fold</font>.

Flop: ($4.50) 7/images/graemlins/heart.gif, T/images/graemlins/diamond.gif, 7/images/graemlins/club.gif <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets $3</font>, SB calls $3.

Turn: ($10.50) 3/images/graemlins/spade.gif <font color="#0000FF">(2 players)</font>
SB checks, Hero checks.

River: ($10.50) A/images/graemlins/diamond.gif <font color="#0000FF">(2 players)</font>
SB checks, Hero regrets not betting the turn and...

[sightless]

check
not betting turn is cool
sadly river makes it ahdr for him to call withw eaker hands so just check behind