Double chainrings up front, white industries Dos Eno freewheel on the back. You do not want to be actually having to flip the wheel over with a touring setup, and this will give you very wide gearing anyway if you do it right.
Leave the tent at home if you think there's any chance you can get away with it.
Zip tie some bottle cages on, riding with a camelback sucks and the water gets hot quick.