I don’t know when you will need them, b/c not only is everybody different, the seasons vary so much that time of year. My wife and I SOBO’ed last year. (http://hiking.sanwalddesigns.com) We hit Harper’s Ferry Oct. 6th and got our cold weather gear. Most of it we bumped to ourselves till we needed it. I think that worked out very well. We had snow everyday after Thanksgiving last year. We made it to Gatlinburg, TN (the Smoky Mntns.) by then. We finished at Springer on Dec. 13. As I recall, it was nice having the warm bag then, but not necessary for a little while. We were also hiking much further than 10 miles a day at that point. So while you are leaving earlier than us, and starting further south…you may want to check out our journal for some insight (or our shedule for some ideas). If you have any questions about our trip, email me. Good Luck!
Michael Sanwald (FatCat)