Size this bet

[davidross]

Party 200.

First towards table image. Villain and I have been at the table together for at least 90 minutes. Since I got there early with 2K in chips I played maybe 4 hands in 4 levels, until with the BB hitting 200 I pushed 4 times, once in LP then 3 times in the next orbit, none of which got called. Then I folded 2 more orbits until with blinds up to 150/300 I pushed over top of a raiser with AK, he had AQ and I doubled up to 5K. A few hands later I open raised again to 750 and won the blinds, now to my hand in question.

Blinds are 150/300. I'm in the SB with AK. Folded to me and I make it 750 again. BB is a big stack at 8K, who seemed to consider calling some of my all-ins earlier, now of course I can hurt him much worse. He just calls my raise.

Flop K Q J rainbow.

Whats my play? Please give me your reasons.