nl50 - big flop combo draw checkup

[BadBigBabar]

nl 50 online
my image is tag twiw, and my note on the other guy is 'passive.' he multitables and his stats are 23/3 after 5000.

BB ($42.60)
UTG ($19.65)
UTG+1 ($13.50)
MP1 ($29.80)
MP2 ($26.80)
MP3 ($52.25)
CO ($25.15)
Button ($52.70)
Hero ($58.60)

Preflop: Hero is SB with A[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/spade.gif[/img].
UTG calls $0.50, <font color="#666666">3 folds</font>, MP3 calls $0.50, CO calls $0.50, <font color="#666666">1 fold</font>, Hero completes, BB checks.

Flop: ($2.50) 8[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(5 players)</font>
<font color="#CC3333">Hero bets $2.5</font>, BB folds, UTG folds, <font color="#CC3333">MP3 raises to $6</font>, CO folds, hero ?

i know shoving is okay here but it seemed awkward because of stack sizes. what do you guys tend to do here? or am i overthinking it?

edited to add pt stats on villain.