Oooh! That's the difficult way round the loop, isn't it? 1-in-45 climb from Barnsley? Wow! I had expected the first attempt to go the easier way round first, selling the tour on the novelty of "new" steam mileage, etc. and then go for the big climb later as a way of selling another tour. How long will the route be available for steam? If it's just a few months, then I see why you are going for all the "firsts" in one go. Mind you, you could probably sell the train at least twice on this route, given the rarity, even in these straightened times. What will be the load for the two locos? If Jubilees were allowed 7 in the 1950s, the pair ought to manage 10 or perhaps 11 with enough spare margin, shouldn't they?