Bluff, bad or good?

[yimc17]

Villian is running at 17/12/3 over 240 hands. He seems to be a decent player, but I don't remember playing any big pots with him.
I think villian in this hand would have bet the flop if he had hit something. So when he checks the flop, then bets the turn I think he is just trying to steal it so i raised and thought I would take it down there. When he called I thought he probably had a pocket pair smaller thans kings, and just thought I was trying to steal. Therefore I figured If I made a nice river bet he would fold. I just wanna know if you guys think this play if profitable inthe long run. thanks. Also at this table I was running at 12/9/3.5, so my image was very tight.

PokerStars No-Limit Hold'em, $0.25 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

CO ($6.35)
Hero ($37.15)
SB ($26.70)
BB ($49.45)
UTG ($23.30)
MP ($33.45)

Preflop: Hero is Button with 5, A.
UTG calls $0.25, [color=#666666]2 folds</font>, Hero calls $0.25, [color=#CC3333]SB raises to $1.5</font>, [color=#666666]1 fold</font>, UTG calls $1.25, Hero calls $1.25.

Flop: ($4.75) T, K, 7 [color=#0000FF](3 players)</font>
SB checks, UTG checks, Hero checks.

Turn: ($4.75) T [color=#0000FF](3 players)</font>
[color=#CC3333]SB bets $2.5</font>, UTG folds, [color=#CC3333]Hero raises to $7</font>, SB calls $4.50.

River: ($18.75) 9 [color=#0000FF](2 players)</font>
SB checks, [color=#CC3333]Hero bets $13</font>.

Final Pot: $31.75