Salty: Contact one of the major brake vendors such as Willwood or Tilton with the diameter of the pistons in the calipers, Rotor diameters, vehicle weight and pedal ratio and they will size the M/C for you. They may even suggest the original M/C with your new pedal ratio. What you have done is ease the effort by reducing the imparted sroke on the M/C but then you also reduced the amount of fluid being moved by reducing the bore diameter. The two combined changes made the pedal much softer but at the sacrifice of less effective brakes.
This will get you going in the right direction:
Mark Williams Enterprises - Brake Technical Information
This company is more Drag Race oriented, so keep that in mind, there are others.