I'm a bit new to SnGs- Need advice

[MarkL444]

Party 11/1

Ive been playing a few of these lately and feel that I am doing very well but am a bit over aggro when it gets down to 3-4 handed. This was a hand that just came up that made me wonder.

4 handed. blinds 50/100
Stacks are:
Hero UTG ( $1040 ) with K [img]/images/graemlins/heart.gif[/img]Q [img]/images/graemlins/heart.gif[/img]
Button ( $700 ) Seems loose
SB ( $2235 ) Playing decently tight
BB ( $4025 ) Loose and aggro

I have been very tight so far.

What is my play here?