50NL - Marginal hand but decent odds and on button

[KJatl]

I was getting 3:1 to call the small preflop re-raise on the button. Reasonably deceptive drawing hand in position so I chose to call.

His flop bet gives me 2.6:1 and I think there's a significant possibility that he has AK here. Otherwise I'm putting him on JJ-AA, and as such I'm not concerned about the diamond flush draw. So I count 9 outs here, either of the remaining two 7's, three 5's, and four 6's. Plus a weak backdoor flush draw. Is this a reasonable call on the flop?

Bodog No-Limit Hold'em, $0.50 BB (9 handed) Hand History converter Courtesy of PokerZion.com

UTG ($51.30)
UTG+1 ($30.20)
MP1 ($43.00)
MP2 ($46.30)
MP3 ($44.65)
CO ($69.00)
Hero ($161.55)
SB ($42.25)
BB ($50.25)

Preflop: Hero is Button with 5[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">UTG+1 raises to $1.5</font>, <font color="#666666">4 folds</font>, Hero calls $1.50, <font color="#CC3333">SB raises to $4</font>, <font color="#666666">1 fold</font>, UTG+1 folds, Hero calls $2.50.

Flop: ($10) 7[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $6</font>, Hero calls $6.

Final Pot: $22