After a few months of reviewing the plans and visiting many websites on the process, I just purchased two alice packs from e-bay to get started on mine and my wife’s proton packs. I’m glad that I found such a wealth of information in this community.
welcome aboard! It’s crazy to look around sometimes still and think about how much great info and knowledge there is here to be had! Best of luck! 
Welcome.
Please post some pics as you go!
id love to see pix of your pack build man. I’ll be gettin my pack build picks up shortly.