Much about racks/bags/trailer/gear will depend upon how much you wish to carry. That in turn will depend upon how you are going to conduct your tour.
Assuming camping and some light cooking, you can purchase a one person tent , sleeping bag and ground pad that is pretty light. Then a small stove and fuel (I carry MSR PocketRocket - very light). My tent is a REI Quarter Dome T1 - about 3 lbs.
You don't have to carry much food if you can purchase it along the way but it is nice to have something in case no store or restaurant can be found.
There are many ways to carry your gear. Traditional rack and bags on the back is a good start. I go with rear rack and bags and a large handlebar bag, but may change this up as the handlebar bag puts weight up high in front. Another option if you go small and light enough there are huge seat bags instead of a rear rack and bags.
One thing you are probably going to want on that particular bike is a different set of handlebars or at least bar ends so you can change hand positions. One of my bikes has trekking (butterfly) bars on it.