Blind against Blind, on the short stack

[Jake M.]

Full Tilt Poker $24+2, $14k Guaranteed, Double Stack (3000 starting chips), 6-Max.
720 Entries
Blinds: 80/160
About an hour and a half into the tournament
2260 chips (3rd to last with 207 players remaining)
Villain has 18045

Everyone folds to me in the SB

Hero 9 [img]/images/graemlins/diamond.gif[/img] 3 [img]/images/graemlins/club.gif[/img]

I decided to call because the last 2 orbits everyone had folded to me and I pushed all in on his BB and he mucked both times. I didn't want to get looked up by a even larger range. Villain checks.

Flop
K [img]/images/graemlins/diamond.gif[/img] 9 [img]/images/graemlins/club.gif[/img] 3 [img]/images/graemlins/heart.gif[/img]

Hero Bets 250
Villain Calls 250

Turn
A [img]/images/graemlins/heart.gif[/img]

Pot is now 860. I have 1850 in my stack. Whats the play? The big blind has been playing pretty tight but got a hold of some chips with quads just recently. I do not feel like he has an Ace here. I doubt he would call on the flop with Ace high. Also, he probably would have raised me preflop with an Ace in my hand. My read is that he has a King, maybe a pair of 9s.

Hero bets 700
Villain calls 700

What do I put him on here? Is he slowplaying a big hand? Is he "slowplaying" a King? Does he have some sort of draw? Now the next question is: What is my play on the river?

River
2 [img]/images/graemlins/heart.gif[/img]

I have 1150 in my stack and the pot is now 2260. I would assume the only play here is all in, right?