Don’t forget to add seat posts. That’s why threaded BBs won’t bring the relief people think it will, poor adherence to tolerances will shine through everywhere.
Also, it will help if you ask a professional to do it. 2017 I bought my first proper road bike. I got a super great deal for a used Cube road bike with great specs (carbon frame, 105/Ultegra groupset, etc.). But the previous owner got rid of it, because he had issues with the brakes. He told me after it had arrived. I went to my LBS and had the bike checked. As part of that, he fixed the brakes within 5 minutes, he cleaned the rotors, pads, undid the caliper bolts, held the brakes and tightened them. I never had an issue with them being out of alignment.
The other guy still tries as hard as he can to get hydraulic disc brakes, something that gets increasingly difficult.