Help with choosing /6 build type for newbie

Hello I have 2 post valiants iam restoring and Iam new to all of this but already in love. My parents owned this car when they where first married in 1969. My other is a 1972. I love the simplicity and styling of them. While i like the cruising aspects i also love speed and street performance. I want them to remain somewhat toward sleeper but keeping them with slant six performance. I will not pretend to know much; but i know i what i want as far as performace. To cut to the chase i want fast drivers and plan on taking them on family road trip afterwards out west and back an american tour. If you where building one or two :D what would you put on them or in them as far as engine and suspension. So give me a list and how to make the most out of it. My 72 has AC and would like to keep for kids to stay cool when cruising or shut off and get that 4 120 going:burnout: to stay cool! I plan on posting my restorations here when i get further along. I am thankful for the advice i have read on hear so far and patience. I cant wait to have them done:finga: but now is getting the parts together and body work done and rust destroyed :banghead:etc almost there on one of them.