Bridges - go vintage fender or hipshot.
Tuners - gotoh res-o-lite (fantastic light weight tuners)
Pups - there are hundreds of pup manufacturers - popular ones are Nordstrand, Fender, Seymour Duncan, DiMarzio, EMG, Bartolini, … I would suggest you hang out in the pickups part of this forum and do some searching.
If you aren't very particular & don't want to spend more than you would on a new Fender standard, you can scoop up Squier parts on classifieds--that will get you to completion. Badass is up to you if you want to spend the extra dough.