opp is running 16/14/4.6
Is my turn bet too small here and should I bet river? Call shove?

Full Tilt No-Limit Hold'em, $2 BB (6 handed) Full-Tilt Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($224.20)
MP ($42)
CO ($230.30)
Button ($250.40)
SB ($219.55)
BB ($258.85)

Preflop: Hero is UTG with A, J.
Hero raises to $7, 2 folds, Button calls $7, 2 folds.

Flop: ($17) T, 4, 7 (2 players)
Hero bets $12, Button calls $12.

Turn: ($41) 2 (2 players)
Hero bets $28, Button calls $28.

River: ($97) J (2 players)
Hero bets $50, Button raises to $203.4 (All-In), Final Pot: $451.40