Here is an old post that might help…
Not sure what you tow with.... you might want to look at 4-500 lbs of lead in the front to balance out the sacks in the back. It’s nice to have the floor clear.
You will definitely need extra weight in the front if you are going to run full sacks in the back. BOW RISE. If towing is a concern a full sack in the walk through works fine… you can decide how full you fill it to adjust for the wake shape a bit.
Only a guess… but you should be able to get about 400-450 lbs of water weight under the bow cushions. The lets go ride sack give a higher number (Stiffy 250 Slim 100) but I don’t think you can fill them completely full when they are under the seats.
Anyone able to get more weight under the bow cushions using water weight? Filling 3 sacks vs one is a pain too.