Shove now or later?

[Twentysack]

No reads villian sat down not more than 10 hands ago.
PFR was just because i had an extra 0.52 in my stack.

Party Poker No-Limit Hold'em, $ BB (6 max, 6 handed) converter

BB ($185)
UTG ($739)
MP ($1519.75)
Hero ($690.52)
Button ($540)
SB ($368.24)

Preflop: Hero is CO with A[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/spade.gif[/img]. SB posts a blind of $5.
UTG calls $10, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $30.52</font>, Button calls $30.52, <font color="#666666">2 folds</font>, UTG calls $20.52.

Flop: ($106.56) J[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
UTG checks, <font color="#CC3333">Hero bets $70</font>, Button calls $70, UTG folds.

Turn: ($246.56) 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets $125</font>, Hero: ???

I think he could have viewed my bet on the flop as a CB so, he may be betting a jack or a straight draw or a weaker king. Shove now and hope he calls with a king or wait for the river? If stacks were deeper worrying about sets and such would be a problem but i am definately going broke with tptk with 60ish bbs behind.