I dont think its going to happen, based on where they are going to be.
First move is Ft Wayne to Bellevue. NKP between two said cities.
Second move is Bellevue to Toledo. NKP all the way or combo NKP/NYC route.
Third move it Toledo to Willimson, Wv. Seeing this is the heart of coal country, this is how I see it. Toledo, to Bellevue to Columbus to Portsmouth, ect same as empty coal trains returning.
Forth is Willimson, Wv to Pittsburgh, Pa. See the same thing here, same route as the coal empties take between the two coal regons. Portsmouth, Columbus either Mansfield/Alliance or Bellevue/Celveland/Alliance (via NKP/NYC in Cleveland) to Pittsburgh.
Fifth is Pittsburgh to Harrisburgh. All ex-PRR
And finally Harrisburgh to St. Louis. This MAY be your only chance. ex-PRR all the way to Cleveland. Then either one of two options. Cleveland to Bellevue/Ft. Wayne to St. Louis, or Toledo/Butler/Ft. Wayne to St. Louis.
With the exception of St. Louis trip all trips are a week apart. They could stop home on the way to St. Louis, making the Ft. Wayne route the one. From what I have seen and read, they are not stopping though. Also this is supposed to be the first of a couple years of these trips, so maybe next year you might see it at Sandusky Bay Bridge.