70 challenger,
I have wilwood disc brakes front and rear, they are the 4 piston calipers.
I am currently using a factory 1.0" master cylinder (power brake, front disc/rear drum)

Car brakes good, but pedal feel is not ideal.
They are touchy, and the pedal travels quite far before getting a firm feel.

In my limited experience And research I would expect a better pedal feel by
Increasing to a larger master cylinder bore.
How drastic is the change going to be between 1/32, 1/16 & 1/8 going to be and which size would you reccommend?

Thanks for helping me improve the safety features of my ride!