So I see all over people mentioning different types of cord for hanging, whipping etc.

I am getting to the point where I want to gather the ends of my hammock, I am going to be doing it as in knotty's thread http://www.hammockforums.net/forum/s...ad.php?t=15205

For suspension of the hammock, what weight limit / size of cord do I need to get? How long should I make the cords for suspension?