Slowplayed my way into trouble.

[King High]

$50 Buy-in 5,000 in chips to start 30 players. We are down to 11 and I have 15,000 in chips in the the top 3. New player to my right 6 handed. This game is full of very poor players I am in the BB 800 I have Q10s UTG raises to 1,000 all fold I call.
Flop is AKJr. My plan is to bust him on this hand he is aggrssive. I check he checks. Turn is K I bet 1000knowing he will raise. He raise to 3,000. I call (I now see my mistake) the river is an A. For AKJKA now what?

[GoSox]

You're a chip leader, why take chances, win that pot on the flop. On the river how many chips does he have ??