I am doing 2 weeks on the trail, from springer to Franklin at the end of September/ beginning of October. I have a frog togg rain suit, 2 extra pairs of socks, 1 extra pair underwear, 1 Columbia lightweight convertible pants and shirt. I have a 20degree sleeping bag, and a 3 season tent. Will I be warm enough on the trail during this time with what I have? Should I add a fleece?