TW Express Phoenix to New York and back.

I have a friend who lives in the Phoenix area who's mother was diagnosed with severe cancer and only a few months left to live. Her and her partner are hoping to offset some of their travel cost. They're driving in a shortbed 4x4 F150 with most of the bed open for cargo. Any items that aren't to heavy and to expensive to ship by conventional methods. It wouldn't be free but somewhere around a 50% savings. As of right now the planned route is,
From Phoenix I-10 E. Take I-20 E, I-85 N, I-95 N, NJ Tpke and I-95 to NY,NY same route back.