NL100,Tough spot AK preflop

[shtirlis]

$0.50/$1 No Limit Holdem
5 players
Converted at weaktight.com

Stacks:
UTG (<font color="#0000cc">$237.80</font>)
CO (<font color="#0000cc">$81.70</font>)
BTN (<font color="#0000cc">$23.80</font>)
Hero (<font color="#0000cc">$275.75</font>)
BB (<font color="#0000cc">$122.00</font>)

Pre-flop: ($1.5, 5 players) Hero is SB A[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/heart.gif[/img]
<font color="#777777">2 folds</font>, BTN calls $1, <font color="#cc0000">Hero bets $6.50</font>, <font color="#cc0000">BB bets $28</font>, <font color="#777777">BTN folds</font>, Hero ?


It' not so easy spot how can we see. BTN- loose maniaac who can't fold. That's why i increase my raise preflop for just push him on any flop. BB unknown and he can understand that i haven't AA,KK,QQ. He knows who is BTN too. Push preflop or we can just call ?