I will be driving (or thinking about it) north from Dallas to Hershey Park, PA. I am thinking I will drive up the Shenandoah sky drive. 1. How long will it take? 2. I will be towing a 26 ft. camper with a truck, is this going to be a problem? I can also take 81, but just want to see how long it will take as I have a few hours to burn. If I do the drive, I will like to spend the night at the southern most entrance and hit the road first thing in the morning. Please if you have done this provdie me your thoughts.