Great start to your ride report! Peru is such a wonderful place to ride, and outside of the major cities the people are some of the most gracious and accommodating I have encountered anywhere.
If you are heading to Cusco, I have to assume Machu Picchu is on the agenda... the entire Sacred Valley area is amazing, and MP is the Crown Jewel, especially if you pass through some of the major archielogical sites en route from Cusco. If you would like a route suggestion feel free to PM.
Wishing you both the best,