Hi my name is Colleen, 55 years old, from Australia and expect to commence walking on 23rd April from SJDP. Like everybody I am trying to be ruthless with the weight of my backpack and am yet to decide on the weight of my sleeping bag. I am not sure what to expect with overnight temperatures and 'the comfort zone' required of a sleeping bag. Would a 5 degree+ be sufficient to cover the whole walk. Any suggestions would be greatly appreciated.