Morning all John Muir here, I was wondering something. I am getting ready to do the Ga section of the trail this April, and I know it has been a colder than average winter. I am set to start in the third week of April and want anyone's opinion on what kind of weather I might be looking at. Also if anyone has used the sea to summit thermolite extreme liner from R.E.I, is that plus a 40* bag going to be enough.