($27) UTG on bubble with huge blinds

[Iridox]

This type of situation doesn't come up very often, but I think it's interesting.

PokerStars No-Limit Hold'em Tourney, Big Blind is t800 (4 handed) FTR converter on zerodivide.cx

Button (t1430)
SB (t2425)
BB (t4580)
Hero (t5065)

Preflop: Hero is UTG with K[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/club.gif[/img].

Button has been extremely tight and is just trying to fold into the money, although now that he's the definite shortstack he might be a little more willing to gamble. I still think he's going to need a really strong hand to call though.

SB hasn't been out of the ordinary.

BB has been playing competently and was aggressive when she had the big stack. I don't think she'll be calling without a really good hand either.

SNGPT says it's +EV with the ranges I assigned, but do you risk this push?

Edit: What if the other players aren't as tight?