$5+0.50 Should I be calling preflop here 4-handed?

[mosdef]

I feel like getting involved and being aggressive on the bubble is generally good, but am I setting myself up for failure by just completing preflop here?

PokerStars Tournament, Big Blind is t100 (4 handed) Converter on pregopoker.com

CO (t2715)
Button (t4095)
Hero (t3490)
BB (t3200)

Preflop: Hero is in SB with 2[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/club.gif[/img]
<font color="gray">CO folds</font>, Button calls t100, Hero calls t50, BB checks

Flop: (t300) 7[img]/images/graemlins/spade.gif[/img] 2[img]/images/graemlins/diamond.gif[/img] T[img]/images/graemlins/spade.gif[/img] (3 players)
<font color="red">Hero bets t175</font>, <font color="gray">BB folds</font>, Button calls t175

Turn: (t650) Q[img]/images/graemlins/spade.gif[/img] (2 players)
Hero checks, <font color="red">Button bets t800</font>, <font color="gray">Hero folds</font>