New brakes, soft pedal, distribution blocks ?

That is what I said, the smaller master with power brakes because the ratio is different and the master moves further and the pedal less than with manual brakes, that's why you need a bigger diam master with manual brakes to fill the 10 caliper pistons with fluid, and if you add a booster it wont take very much pedal effort at all to stop the car. But like I said it is a lot of brake for a light car so he shouldn't have a problem.

I think there may be confusion over which m/c will fill the Piston Chambers more quickly, - as opposed to which m/c will move up to 10 pistons of "x" diameters 4 or 5 thou. with the greatest "mechanical" advantage.

Once the servos are full, only a few CC's of M/C fluid is needed to apply full brake with minimal pedal movement, regardless of M/C dia.
Cheers