Although the posters here have an incredible fund of knowledge, probably your best advisor will be your bike. As you tour, you will have innumerable strokes of genius as your bike helps you decide what to stow and where, how much water to drink, with or without supplements, what food and snacks to bring, etc. And, of course those decisions will change for different tours. What works on one tour may be less successful on another.
Your lifelong experience on bikes will help you hear, and interpret, your bike's advice.
Have fun.