If you do a search on "route" or "routes" you will find many posts dealing with how to take baby steps toward longer, more profitable routes. Start with profitable single day routes and work up to one overnight stop on a 2 day round trip route.
Far more tips when you do a search. Usually there is more than one route shopping session at each IMSC shopper conference, btw.
Based in MD, near DC
Shopping from the Carolinas to New York
Have video cam; will travel
Poor customer service? Don't get mad; get video.