Implied odds question

How big of a stack does a villain have to have before you would call preflop raises with suited connectors both in position and out of position?

Also, what are the odds of hitting 2pair or better or a big draw on the flop with a suited connector?

In this hand i miss out on $13 because i didnt think button's $7 stack was enough implied odds to play a pot being out of position against him and the SB maniac.

Ultimate Bet No-Limit Hold'em, $.10 BB (8 handed) FTR converter on zerodivide.cx

Button ($7.15)
SB ($6.45)
Hero ($13.40)

Preflop: Hero is CO with 6[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/club.gif[/img].
<font color="#666666">4 folds</font>, Hero calls $0.10, <font color="#CC3333">Button raises to $0.55</font>, SB calls $0.50, <font color="#666666">1 fold</font>, Hero folds.

Flop: ($1.30) 6[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $1.3</font>, <font color="#CC3333">Button raises to $5.2</font>, <font color="#CC3333">SB raises to $6.5</font>, Button calls $0.

Turn: ($13) 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>

River: ($13) J[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>

Final Pot: $13

Results in white below: <font color="#FFFFFF">
Button has Ad Kd (two pair, aces and sixes).
SB has 9s As (two pair, aces and sixes).
Outcome: Button wins $13. </font>