50NL: Is a semi-bluff spew here?

[RapidEvolution]

I have MP3 at 9/6/0 over 45 hands (not much)
BTN is 28/18/3 over same sample


$0.25/$0.5 No Limit Holdem
9 players
Converted at weaktight.com

Stacks:
UTG (<font color="#0000cc">$60.40</font>)
UTG+1 (<font color="#0000cc">$42.10</font>)
MP1 (<font color="#0000cc">$49.40</font>)
MP2 (<font color="#0000cc">$44.00</font>)
MP3 (<font color="#0000cc">$56.95</font>)
Hero (<font color="#0000cc">$50.00</font>)
BTN (<font color="#0000cc">$56.25</font>)
SB (<font color="#0000cc">$84.35</font>)
BB (<font color="#0000cc">$49.25</font>)

Pre-flop: ($0.75, 9 players) Hero is CO Q[img]/images/graemlins/spade.gif[/img] J[img]/images/graemlins/spade.gif[/img]
<font color="#777777">4 folds</font>, <font color="#cc0000">MP3 raises to $1.75</font>, Hero calls $1.75, <font color="#cc0000">BTN raises to $3</font>, <font color="#777777">2 folds</font>, MP3 calls $1.25, Hero calls $1.25

With position on the initial raiser, I elect to flat with QJs. After the minraise by the button and MP3's call, I'm looking at huge odds to call here, so I do. Also, if button moves first on flop, I can see what MP3 does before doing anything.

With the raise and call, I think BTN's minraise is either in the range of QQ+/AK or some random weird hand.

Flop: 9[img]/images/graemlins/spade.gif[/img] 5[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/spade.gif[/img] ($9.75, 3 players)
MP3 checks, Hero checks, <font color="#cc0000">BTN bets $9.75</font>, <font color="#777777">MP3 folds</font>, <font color="#cc0000">Hero goes all-in $47

I pushed here to maximize FE against and AQ/AK type hand, fold out the higher pairs, and get it in, in case he minraised with some weird sc hand. If he's here with AA, I still have outs to draw out to. Is my reasoning okay here?