While others may disagree, this is what I've noticed about the wedge. In my opinion, the wedge merely changes the shape of the wake. With the wedge down, the wake becomes more steep.
I would lean toward adding water ballast and keep a small amount of lead to fine tune the wake from side-to-side. As far as weight, you could easily start with 250-300 each locker and 500 in the bow or walk through.
Just my two cents.