I'm impressed with how steady you and your hitting partner are. You were keeping those cross court rallies going very well. Footwork is good but seems a little heavy. You could be a little lighter on your feet. From your hitting alone, I'd say you're at least a 4.5. But, you could be higher or lower depending on how well your shots hold up in match play. Your serve is good. 2 things I would add to your serve are: (1) more shoulder turn in the trophy pose (get your back turned more to the target), and (2) wait until you are ready for your upswing to transfer your weight into the court. By transferring your weight AS you swing up at the ball, the weight transfer adds body mass and power to your shot.