I would find it hard to believe that the wakesetter package for that boat didn't come with Malibu's cruise control? I have an 06 and thats what we use on my rig, operates differently that PP, but once you are used to it, works just as well, imo.
Like yourself, my boat only has the 3 below floor hard tanks. For sure run something up front, I do a 400lb tube sac in the bow walkway with nothing else in the rear except stock. Sure, you can make it bigger and I have had more weight in it, but it seems you can find a sweet spot with the power wedge and the configuration I mentioned and I really like it. Hopefully yours has the power wedge.