Hey all! Have a 1998 ford ranger xlt 4x4

Did my brake booster and master cylinder 3 weeks ago because i noticed when i would slam hard on my brake pedal my brake lag time was very long to the point if a car infront of me slammed on theirs i would probably hit them because my foot is all the way down and it didnt changed the braking pressure. After doing the job i noticed the brake effort is easier but the brake lag time still isnt great and i also notice the more i brake the betterish it gets? just wondering if this is a brake hose problem or calipers next?