I really like the Cavalier Pickups "Fat Lion" (slightly overwound A5 tele pickup) that I have in the bridge of my jazzcaster. Cavalier specializes in tele pickups and has a range of models, might have something to interest you. They're also pretty affordable. Highly recommended, if I were to build another telecaster I wouldn't hesitate to use their pickups.
https://www.frettech.com/
As far as wiring mods, series/parallel switching is fun and can be done either with a four-way switch or push-pull.