I am interested in doing a backcountry hunt off my back and looking for a pack. I don't think I could go wrong with badlands as I do have some experience with them. The construction and comfort seems to be unmatched. The only thing I don't know about is what size to get. I would pry be doing a four or maybe a five day hunts. Anyway, my question is, would the 4500 be too much for me or could I make the 2800 work? Any other packs? What size range would I need?