My 11 y.o. son and I have become active in Scouts and are really enjoying the backpacking and camping. I am glad I found BPL as it is revolutionizing how I think about gear. We have been camping here in Fl and he has been using just a fleece cover at night. This has worked fine, but tonight we started looking at his gear for a overnighter along the AT in the GSMNP next month. Where we will be the night temps range in the 60s it looks like. I looked at his old sleeping bag and was stunned to see it weighed nearly 5lbs and took up almost all of his pack! So I am now on a mission to find him a good bag.
I would like to be able to find him a bag that will work for the fall and winter. Our troop camps each month so we will likely see temps around 25 at some point here in N Fl. Cost is a consideration, but I want him to have something that will serve him well for a while. A couple of choices I have seen are the Kelty cosmic down 20 and the Eureka Silver City 30. Do you think that a 20 degree bag will serve him if it is closer to 60? No base layer, open bag, etc?
Any other recommendations are appreciated.

