Yippee! I will be on that same trip with William (whayes). I too am impressed with your light packing, William. We just bought more light weight luggage, so I can stay under 50 pounds. DH and I are packing two 25" suitcases (checked) and one 17" carry on. And I still feel that I am going to be short on clothes. I am bringing a bit of Tide to hand wash things as needed. But I don't want to have to carry around wet clothes with me all the time either.
I have avoided reading any trip reports because I don't want to spoil any surprises. I also decided just to watch a few specials on each of the cities, mostly Rick Steve's. This is totally different for me. I am usually a super planner and read every guide available. But I want the whole tour to be an entire learning experience for both of us. Plus, I have a tendency to play tour guide, if I have done a lot of study on a destination. That can get on DH's nerves a bit, especially if we already have a tour guide.
Wow, am I ever excited!