My daughter and I are planning a two week trip to Peru. The first week is in Cusco. I was thinking on staying in the Sacred Valley for 5 days and Cusco for 2 days. Looking at the train schedule to Machu Picchu it looks like I could arrive at 8:20am and leave at 4:45pm if I go from the Sacred Valley. Dose anyone have an opinion if this is enough time to see MP? Leaving on a later train and staying over night would only add about 2 hrs.