Manual disc brakes vs power disc brakes questions

I have a disc brake question but need to lay out what i have, and what i am concidering.

I have the disc / drum setup off a 79 cordoba. This has the 11.75" rotors and 2.75" calipers, and 10x2.5" finned drums in the back.

I have a 74 dart power booster, and would need the 79 cordoba master cylinder to port enough fluid to make the cordoba pistons work.

The dart master cylinder as well as the cordoba one are both cast iron and extremely heavy. This is probably the reason for 2 additional support struts off the power booster to the firewall and inner fender. I also have put this car on an aluminum diet, trying to shed some nose weight.

I was looking into the aluminum master cylinders off a 79 dodge D150 pickup. This truck uses the same rear wheel cylinder part number as the 79 cordoba, but has 3.18" diameter piston calipers.

If i use the dodge truck master with the 74 dart power booster, will the brakes be too touchy? If this is so, will it offer enough assist by itself if i run the dodge truck master cylinder as a manual brake master cylinder with my cordoba brakes? Is the dodge truck master cylinder ports SAE or metric thread? Will it accept a regular A body manual brake pushrod? If not where can i get one that fits? I know there is an adaptor bracket for this conversion.

Reason i mention this is i have driven 4 wheel manual and power drum cars, and power disc brake cars before, but not manual disc brake cars.

I know it would be much simpler without power brakes to work on the car. Anybody do this before? I want to decide before i spend any money rebuilding this booster.