Help with an 06 X-30 wake

800 lbs of factory ballast isnt enough for me anymore. Therefore I want to order some sacs but not sure where to start. Right now with the ballast full and the trim up it makes a nice steep wake, but not as big as I would like.

I figure 800 lbs more should start me off right. Dont know where to put them or what to order. Can someone help me out?

Thanks