I am planning a 2 day hike with my family (wife and 2 boys aged 8 & 10) and our 2 year old dog from Bear's Den to Harper's Ferry. We are all very active (dog included) but this will be our first hiking outing. Any advice for this particular section of the trail as it pertains to my specific scenario (especially any advice on dog friendly places in Harper's Ferry) would be greatly appreciated. Thanks.