I would add 2 scarves and cut down on 2-3 dresses. Scarves for variety AND warmth as needed, I tend to wear bland neutrals and accessorize with scarves (also one of the few souvenirs I'll shop for when traveling ;-)
My personal choice would also be a slim black pant over a jean - more flexible to dress up or down, depending on fabric, usually dry more quickly than denim if it rains or you do hotel sink laundry.
Also, while I sleep naked at home, I hate to do that when I'm in a hotel traveling alone. I usually bring 2 sets of gym clothes and alternate them as lounge/sleepwear and gym wear, washing each on alternate nights. You might not want lounge/sleepwear, but I like to have something flexible. Another alternative would be a comfortable knit pant I could fly in (but still look nicer than "sweatpants") and lounge/sleep in hotel in. I don't like traveling in jeans or dresses, though.
Have fun!