As always, first class upgrade. Looking forward to seeing more videos of the 2-10-4. How about doing a double header with one of the O5 4-8-4's? In the 1960's, the Burlington ran an excursion with 4-8-4 5632 and 2-10-4 6315. I'm sure your engines would look great double headed on your layout to recreate this event.
RAY