I would usually take a map and compass, some adhesive tape (1m of ducktape).
If you can dry your riding clothes overnight, you dont need spares. I would probably only take one jersey,or take 2 and use my spare as a T shirt for the night.
Ditch the soap, you can usually find some at a B+B/hostel. Take a hotel sachet of shampoo.
Your toothbrush can double up as a tyre lever. No only kidding