In the future have the camera person stand 90 degrees to the car on the starting line so we can see the initial car movement better
Two things cause misfire at the higher RPM, lack of fuel or igintion
Lack of fuel doesn't occur in first and second gear, normally it starts in high gear in the upper RPM in 1/4 mile
If your using a power adder you might want to close up the spark plug gap .005 or so
IHTHs