Try a Gunnar Sport. It makes a great lite tourer.
I like to avoid high bottom brackets in a bike for touring.
Tubus makes a great little rack called the Fly. It weighs 12 oz, or about half what some racks weigh. But the real trick to lite touring
is keeping the weight down of the stuff you carry. Feather light synthetic clothing can save pounds. Check out GoLite and Patagonia.