Hello futuregun....recently fitted a calibrated set of nailbombs to my Ibanez RGT, which is a similar beast to your Jackson.....and they sound superb....I also added a couple of extra pots for independant tone and volume control, but if you don't like the idea of taking a drill to your guitar and want to stick with two pots then I'd say ditch the booster and fit some quality 500k pots and a quality cap.
If you still think you need more boost, go for an external pedal of multi effects unit.
Happy riffing