I have a habit of buying Squiers (first Classic Vibes, now even just Affinity), so long as they feel good and the neck is straight, then I will relic/refinish them, upgrade tuners, maybe the bridge, the pickups and the pots/jack/wiring. I have learned basis soldering, too, but I do have a guy that sets them up and fixes my occasional bad solder jobs. I have quite a few sweet basses now:
Here is my latest 1966 tribute P-bass in aged Olympic white (it was totally white before) with an aftermarket neck from here as I broke the headstock drilling the smaller 1999 Chinese tuner holes to accommodate USA 70's ones). Original Precision '63 USA p/u, CTS pots, cloth wire, Switchcraft jack. I used a 60's Classic vibe neck with threaded saddles, and I added the bridge cover, which I am really digging recently, too. The neck was very relic-ed when I got it and I botched adding the Fender logo, but it's fine. I really dig the block inlays, too.
Here is my prior project - a 1972 tribute P-bass. It was a red Squier but I bought it stripped to natural. It would not take stain to go walnut color, so I added gold sparkle paint, then amber shellac (all by hand) to give it an "authentic" relic look/feel. I aged all chrome parts (all were shiny before) and the P/U is an Aguilar, which is okay but quiet. I much rather prefer the Original Precisions. This one is interesting in the light due to the gold sparkle. I also aged the headstock and the Fender logo turned out perfectly. This was the first build in which I was successful in really aging the chrome to look old, battered and vintage.
My next build is a Squier P-bass in black with tort PG and rosewood neck. It's going to have a MIJ Fender P-bass PU in it and the same CTS harness as the above two. The neck is already aged and logo turned out perfectly. I will relic the body and new tort PG a little to take off the poly shine. I also have Schaller tuners for it. I will keep all hardware shiny chrome.
I also have a Squier PJ bass in antique burst I just bought last weekend used. I am on the fence about making it a PJ or just keep it a P with a dummy J PU.
I like the clean look of just the solo P PU. I scored an insanely good deal on it sold as a "Fake Fender" and the owner had aged the neck, sprayed it with nitro and the 60's P bass logo is perfect (although I prefer the 70's logos for J & P basses). I'm having some difficulty figuring out wiring the harness for PJ, though, so this one may take some time....