I am thinking of building a new boat and was wondering how fast it will go with my setup compared to a friend of mines setup. Im going to be putting two Graupner speed 500 motors in 2 mini jet drives on a 6 cell 7.2v battery in a 31 inch deep vee hull. My friend is using a 24 inch deepvee with 1 540 motor on a 6 cell battery as well. Will my boat be faster than his? By how much?