Your first tour will be a great learning experience. Patch together a collection of second hand stuff then go on tour. After the tour decide what you don't like, and think will be more suitable. Make changes. If you find out you don't like touring, you haven't mortgaged the house to get equiped.

If your plan is to ride across America, or something else grand, make a few test tours of 2 to 4 days close to home to iron out the wrinkles in your kit.