overpair, can i throw it away to the turn raise?

[fire_fly]

Total noob to nl.

Party Poker No-Limit Hold'em, $ BB (9 handed) converter

Villain is an 11vpip rock over 50 hands. I didn't consider this enough when making my decisions i believe.

Button ($36.75)
SB ($24.75)
BB ($21.05)
UTG ($100.06)
UTG+1 ($49.45)
MP1 ($25.77)
Hero ($25)
MP3 ($28.15)
CO ($5.96)

Preflop: Hero is MP2 with A[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/club.gif[/img].

Ok, cool, aces.

SB posts a blind of $0.10.
<font color="#666666">2 folds</font>, MP1 calls $0.25, Hero calls $0.25, <font color="#CC3333">MP3 raises to $0.8</font>, <font color="#666666">4 folds</font>, MP1 calls $0.55, <font color="#CC3333">Hero raises to $3</font>, MP3 calls $2.20, MP1 folds.

Flop: ($7.15) K[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $6</font>, MP3 calls $6.

How worried should I be that this rock just called my potsized bet? I figured him for AK, wrong of me?

Turn: ($19.15) Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $10</font>, MP3 calls $19.15 (All-In),

Considering the rockiness of him, should I be able to lay this down for 10 dollars more in a 50 dollar pot?

Hero calls $6 (All-In).

River: ($54.30) 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players, 2 all-in)</font>

Final Pot: $54.30

All (constructive) comments appriciated. Thanks.