Brake emergency

Good grief. Some posts read like these brake systems should never have been allowed on the streets. The car is what 50 years old ? over 100K miles ? and hasn't hit a wall ? Some luck huh ?
If you are resurrecting the dead, of course you should replace 100% of the brake system. Routine maintenance is just what you've done, inspect carefully, service/repair/replace as deemed necessary.
From what I've read, these modern model hoses with metal straps crimped onto them have a higher failure rate.