Given your light team, your water team might as well be shelved until fire pops up again.
Or, you can try to make your water team function a bit differently just for variety's sake. Which means putting in Sarasvati for burst generation.
Gawain w/ Sniper Shot or D'art w/ Ambush, Sarasvati, Triton, Aphrodite, and your pick for the last slot.