I'm in the planning stage of that trip, I'd love to find out the answer to that question as well. My plan was the lightest hammock set up and a torso length therma rest for ground. But if I can safely commit myself to using a hammock the whole trip I can get lighter and more comfortable.
"don't ask yourself what the world needs. Ask what makes you come alive and go and do that because what the world needs is people who have come alive."