Oh, that looks gorgeous!

I looked at your itinerary, and it looks like you'll mainly be staying in two different towns over the tour, which would make it easy to hand wash your clothes & leave them in the room to dry. I'd take two pair of good bike shorts and a small bottle of woolite. This is handy for hand washing your street clothes, as well as bike clothes in Europe.

Do the Experience Plus folks provide a recommended packing list?