chip leader 5 away from the bubble

[stew77]

Pokerstars 50+5.
iVE BEEN chip leader since about the 4th hand of play. we are now down to 41 and top 36pay. Im only concerned with top 3. Table has been very passive and i have basically had my way with it. being aggressive and picking up pots.

blinds are 200/400
Hero (14500) is dealt A [img]/images/graemlins/spade.gif[/img] K [img]/images/graemlins/spade.gif[/img] in EP
Villain (9100) had already limped in UTG, he hasnt played many pots at all

I make it 1600 everyone folds back to villain who just calls

Flop comes K [img]/images/graemlins/diamond.gif[/img] 9 [img]/images/graemlins/heart.gif[/img] 2 [img]/images/graemlins/club.gif[/img]

Villains checks, Hero bets 2800, villain goes all in for 7500

pretty standard scenario? whats my play?