Me and my girlfriend will be taking an alternative thru hike that involves us hiking from Georgia to SNP in fall and winter. We've descided we'll need new winter gear before the trip and were wondering what kind of sleeping bag would suffice for those sections of trail during winter. I've looking at temp ratings between 15F and 20F, but she's thinking we'll need 0F sleeping bags. I'd rather not lug the extra weight of a 0F if it won't be needed, but would also like not to freeze if it is.

Thanks for checking this out and for any responses.