Hi guys. I've been gassing to do a project and i think my Matt Freeman Squier Pbass might not be a bad place to start. Im going for a beefier sound with a touch of high end and i want more growl to it. More than just adding a J pickup in the bridge. I was thinking of putting a humbucker right by the bridge.
After that, possibly adding an Aguilar OBP-2 stacked (bass/treble) preamp in place of the tone knob.
but lets just focus on the humbucker first.
i want to install the humbucker by the bridge and make a threeway selector switch (think of the les paul toggle) to switch from P to P/H to H. The problem is, if i decide to do this, how would i make the room for a toggle switch and how would i make the path for the cables.
My gear right now:
Squier matt freeman pbass
Fender rumble 15.
(Yamaha bb300 defretted)
I just want the versatility without blowing a bunch of cash in an investment for a good amp. also, i dont want to buy a new amp since im probably gonna be outta the house in a year or two (finishing highschool

) i just want growl of a humbucker and a toggle swithc.
THANK YOU for all your help as this has been bugging me for a couple weeks and i don't want to do anything stupid. THANKS