Brake opinions needed

71 Duster, late B cop brakes, sliders, mid 70's Lincoln discs and calipers rear. Caliper piston diameter is nearly the same and the rear discs are 1/2 in diameter smaller than fronts. Car near 3200 lbs. power or manual? Ordering the rest of my needs from Doctor Diff today. I'd like to hear from guys that have manual brakes on their cars, how it feels, how it stops, if they could do it all over again, would they? The engine is mild enough to not cause any vacuum issues. Thanks