I use 9' all around with self tensioners on the sides. Some do shorter, but I have used all of the length a few times. When one side of the tarp is on a hill, or on the side of a creek, the extra line is nice to have. The longer on the ridgeline gives me the option to hang on longer distances than some. I also have longer webbing on the hammock for this reason.
I would stuff it where ever. Look into mesh snake skins. They are really nice and make setting up the tarp really fast.
Is that too much to ask? Girls with frikkin' lasers on their heads?
The hanger formly known as "hammock engineer".