What do I need to do to add an intergrated balast setup to my Sunsetter

01 Malibu Sunsetter VLX w/ Corvette LS1 package and Skylon Swoop Classic tower.

Just got her, previous owner just had a sack in each rear locker w/ a fairly cheapo pump you had to manually hook up and plug in. Just tried that setup yesterday, and it sucks.

Electrically, I know I need to buy the switches, make up a relay bank for the pumps, and tie into the circuit breaker system.

There is where I get lost, as I don't have any friends with wakeboard boats to see what their setup looks like. I have a plug near the V-drive that I am guessing there is some sort of fitting out there that can screw in and become the water intake for the pumps. I assume you just buy one pump per bag, or is there some diverter valve pump that can fill multiple bags?

I also probably want to do a ski locker bag, as with the two bags yesterday (which fill up about 2/3 of the locker), and the wake plate down the bow rise was crazy and it was near impossible to hold the right speed (no perfect pass, though I'll probably do that this winter).

Any info would be appreciated. This is my first inboard so I've got a lot of learning to do!