in terms of final image quality (sharpness and detail). You're shooting at 1/250 sec which is right on the borderline of stopping motion in this type of sports action.
Actually, you are missing a 1 in that exposure. He said he was getting 1/1250s which is absolutely amazing at ISO800!
In the somewhat new, state of the art university arena here, I can only get around 1/500s at F2 and ISO1600. 
Volleyball is very difficult to shoot properly (ie, get expressions and ball in the shot at the same time), and you did a remarkable job.

