So basically, I've had the itch for a short scale bass for a while, and I also really enjoy having an instrument which is solely unique to myself. So, to satisfy both of my desires, I have decided to create an abomination that few people would enjoy looking at. Fortunately, my band members are some of those few and are actually egging me on to do it. So, here's the main idea: I want to take a Fender Mustang body, add a Warmoth neck, and have three pickups in it: Rickenbacker bridge and neck, and a Guild DS-1 BiSonic Humbucker in the middle (Wired Volume x3 Tone x3 with three concentric knobs). The way I was thinking of doing this would be to buy a Fender MIM PJ Mustang body off of Reverb, getting a Warmoth short scale Warhead neck made (All maple, with white binding and pearloid blocks to get that Geddy J bass look ), and then acquiring the pickups and going to town on the body. However, I've not the experience or tools to route out a body (or pickguard!) for three new pickups, so I am probably gonna get a local luthier or someone else to do it for me. The wiring should be easy enough, right? Now, I've got a couple of questions. Obviously, I'm not going for the exact sound of a Ricky but similar would be nice. How do I measure the positioning for the bridge/neck pickups for them to be as similar as possible (Considering there is the big BiSonic in the middle)? On the same note, what kind of pickups do you guys recommend? Should I go for a whole mounting ring on the bridge pickup (Admittedly, would look cool), or should I just mount the pickup by itself? Should I get the neck specs to match those of an MIM Mustang neck, in order to ensure the nicest fit? I'm just doing some research as to how I should go about this, really. The plan will not be enacted for a while, as of now. Please keep that in mind.