Re: make pickup active
An on board pre-amp and passive pickups makes it hard to get predictable results. It seems too much money to spend when its really uncertain what tones you will end up with.
The big issue is the effect of the pickup resonance (Q factor / frequency), and how its going to change when you move to an active preamp.
If you want active pickups, its much better to choose an active pickup in the first place. EMG makes the 89 and 89R split-able humbuckers which are noiseless when in single coil mode, so maybe consider those if you want to go for actives.