Standard AK shove?

[DirteAA]

Villain is ~37/16/3 350+ hands. He was getting smoked for the most part and could be steaming from that. I was pretty active 25/18/3. We hadn't really tangled much, but he overvalued hands and seemed pretty stubborn once he got involved in a pot.

Full Tilt Poker - No Limit Hold'em Cash Game - $1/$2 Blinds - 3 Players - (LegoPoker HH Converter)

SB: $405.00
Hero (BB): $564.25
BTN: $260.55

Preflop: Hero is dealt A[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/heart.gif[/img] (3 Players)
<font color="red">BTN raises to $7.00</font>, SB folds, <font color="red">Hero raises to $27.00</font>, <font color="red">BTN raises to $75.00</font>, <font color="red">Hero raises all-in to $564.25</font>