^---My stock power master cylinder works fine on my 74' for this. If anything, I'd delete the prop valve for fun, but that's nothing to be concerned with.
For the e-brake cable: those cable loops you use for your dog leash, you use one of those to close the cable around the engagement hook. Done deal. Cable adjusts fine, make sure you adjust the drum brakes, make them they drag a little. 8.8 fits like it was made for it, seriously.