Axs hand from a PS 20+2

[Spook]

PokerStars No-Limit Hold'em Tourney, Big Blind is t100 (6 handed) converter

CO (t2430)
Hero (t2060)
SB (t2470)
BB (t3235)
UTG (t1245)
MP (t2060)

Preflop: Hero is Button with A[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, MP calls t100, <font color="#666666">1 fold</font>, Hero calls t100, SB completes, BB checks.

Flop: (t400) 3[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, BB checks, MP checks, <font color="#CC3333">Hero bets t200</font>, SB folds, BB folds, <font color="#CC3333">MP raises to t400</font>, Hero calls t200.

Turn: (t1200) T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP bets t200</font>, Hero calls t200.

River: (t1600) K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP bets t1360 (All-In)</font>
Final Pot: t2960

I had seen the villian play Axs before down to A7.
I am thinking I should have reraised to 800 on the flop and folded to a push? This would have better defined my hand?