Early A, 9”……if it was yours, take $ out of the equation, whats the best solution for brakes

I'm a fan of the KH 4-pot system, plus you get to keep your small bolt pattern.
But for your application, I'd probably leave the nines on there and just upgrade to 14" wheels.
But then, I'm 70, recently retired, and time is something I got lots of, lol..