I have a 2000 outback . with only a driver and a spotter the best wake in a outback is to throw the back seat out, put 2 500 lbs sacks in the back laying sideways side by side then put one on each side of the motor, if they are around 500 dont fill them all the way, then either put a 5th bag in the walkway or some sand up in the bow storage.
With what you have now i would do what jon allen said, but not so much in the bow. these boats are very front heavy compared to others. and have people sit in the back seat if you leave it in. DONT LET ANYBODY RIDE IN THE BOW, it will not track right or corner worth a shizz