Holy moly man.......the choices are unlimited. Do you want a drop away rest, full capture rest, prong rest, flipper rest?Sights? Do you want multiple pin, single pin, pendulum?
If you're backpacking a lot, your going to need something tuff. If you force me to pin something down......

Since you'll be doing a lot of still hunting, go with the whisker biscuit. The arrow won't fall off of the rest. Sights, get something sturdy. Copper John, Montana Black Gold, Trophy Ridge, just to name a few. Release? Well, are you shooting a string loop, or off the string. With a loop I would say a TruBall Short N Sweet, off the string, TruBall Tornado.
Don't forget a good stabilizer and quiver as well.