I'm selling my Ibanez SRX505, and instead of buying a new bass, I'd rather just pimp out my jazz. I want to throw some bartolinis in there, with a bartolini pre-amp, and I want to add a active/passive switch, so I can have that versatility, and maybe I'll need to add another knob or two for the EQ from the active pre-amp. In terms of power, what would be better, 9V or 18V? I also want to upgrade my bridge, and anything else you can think of. Don't worry about cost just yet, but obviously don't go outrageous. So, I need active pickup/pre-amp suggestions for Bartolinis, and a suggestion for a new bridge. If you can think of anything else to upgrade that will greatly improve the sound, let me know. Thanks.