I am looking to starting at Pine Grove Furnace State Park and Finishing at Harpers Ferry about 80miles. This seems very doable, 10mi a day. Just looking for information. Can you overnite at Penn Mar County Park, or do you have to go to the next shelter? Although I could carry all my food for 8 days where would be a good place to resupply not far from the trail? How is the water for this section? I will be hiking April 19-26. Water should be ok for the early spring i would think. I have hiked imn the summer and winter so my bag choice was easy. I am a warm sleeper and need opinions. Marmot pounder 40 degree bag/ with liner, will it be warm enough?