What could I have done differently?

[AcesKracked]

A 16 man home tourney (10-12 solid players), we are down to the last 7. I am number 2 in chips about even with the leader and most everyone else very short, blinds and antes are getting heavy.
I am on the button w/ K [img]/images/graemlins/diamond.gif[/img] Q [img]/images/graemlins/diamond.gif[/img] everyone folds to me I raise to 4x the BB (30% of my stack). SB folds, BB (chip leader) pushes. I had been stealing blinds several times as everyone was just trying to stay alive. I feel that I am pot committed and probably am in a race situation at worst. The chip leader is a very solid player but is very aggressive and has many times in the past been willing to throw his stack in on a bluff to give himself a chance at winning later (1st or Bust). He turns over AA and knocks me out.
1)How should I have played this differently?
2)Could I have gotten away from this hand?
3) Should I have folded and let probably 3-4 players be blinded out in the next 2 rounds?
Thanks for any advice
AcesKracked