KIA question

I just finished a tournament with a disappointing loss. If any of you know the King's Indian Attack, you know that it can be played against the french, sicilian, and the caro-kann. My game started out 1. e4 e6 2. d3 d5. 3. Nd2 dxe4 4. dxe4 Nc6. I was just wondering what white's game plan is here. Should white's game plan change because of black's slight inaccuracies? Should he/she stick with their KIA setup and fianchetto their light scared bishop? Where should white look to attack and expand?