20+2 Bubble Hand with AK

[Fundingone]

PokerStars No-Limit Hold'em Tourney, Big Blind is t100 (4 handed) converter

Button (t4405)
SB (t4290)
Hero (t3785)
UTG (t1020)

Preflop: Hero is BB with A[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">Button raises to t400</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to t1500</font>, Button calls t1100.

Flop: (t3050) 9[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/club.gif[/img], 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t2285 (All-In)</font>, Button calls t2285.

Turn: (t7620) 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

River: (t7620) 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

Final Pot: t7620

I'm not sure what to do here especially preflop should i reraise to like 1800 instead of 1500 and then push? It's these parts in the SNG where I make the most mistakes.