Protecting MPTK in large multi-way pot

[jmumm]

Button is very loose aggressive, sb is awful player who has showdown terrible hands on many occasions.

PokerStars 0.50/1.00 Hold'em (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is BB with 7[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
UTG calls, MP calls, <font color="#CC3333">Button raises</font>, SB calls, Hero calls, UTG calls, MP calls.

I think my preflop here is justified getting likely 9:1 on my call even with a possibly dominated ace.

Flop: (10 SB) 7[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, Hero checks, UTG checks, MP checks, <font color="#CC3333">Button bets</font>, SB calls, <font color="#CC3333">Hero raises</font>, UTG folds, MP folds, Button calls, SB calls.

Here I figure button is c-betting almost all of his hands. I c/r the flop to help protect my middle pair against the two limpers and I don't think SB is very likely to have anything here. Is my play correct?

Turn: (8 BB) 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, Button calls, SB folds.

River: (10 BB) J[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, Button calls.

Final Pot: 12 BB