Was This The Correct Play?

[YoungPoker2]

This was only my 2nd or 3rd hand on the table, so I didn't really have a read on the guy. I put him on Kings after the flop, and the turn came and I figured I'd try a scare raise. Q5o??? I'm just trying to see if maybe I should've laid this down on 4th, or if I had to call?

Party Poker No-Limit Hold'em, $0.50 BB (10 handed)

UTG ($25.15)
UTG+1 ($25)
UTG+2 ($33.87)
MP1 ($18.50)
Hero ($24.50)
MP3 ($85.64)
CO ($27.20)
Button ($9.95)
SB ($79.68)
BB ($44.71)

Preflop: Hero is MP2 with J[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/spade.gif[/img]. UTG+1 posts a blind of $0.50.
UTG folds, UTG+1 (poster) checks, UTG+2 calls $0.50, MP1 folds, <font color="CC3333">Hero raises to $2.5</font>, MP3 folds, CO folds, Button folds, SB folds, BB folds, UTG+1 calls $2, UTG+2 folds.

Flop: ($6.25) A[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/heart.gif[/img] <font color="blue">(2 players)</font>
<font color="CC3333">UTG+1 bets $6</font>, <font color="CC3333">Hero raises to $12</font>, UTG+1 calls $6.

Turn: ($30.25) K[img]/images/graemlins/heart.gif[/img] <font color="blue">(2 players)</font>
<font color="CC3333">UTG+1 bets $5</font>, <font color="CC3333">Hero raises to $10 (All-In)</font>, UTG+1 calls $5.

River: ($50.25) 4[img]/images/graemlins/spade.gif[/img] <font color="blue">(2 players, 1 all-in)</font>

Final Pot: $50.25

Results in white below: <font color="white">
UTG+1 shows 5d Qh (two pair, kings and fives).
Hero shows Jd As (two pair, aces and kings).
Outcome: Hero wins $50.25. </font>