Wow, this is some project! It's a beautiful coat.
The directions for the border are to work charts 1,2 and 3 for hem edging as follows: work row 1 of chart 1 once, repeat row 1 of chart 2, 8 times for size small, repeat row 1 of chart 3 once. So then for row 2 of the border you'd do row 2 of chart 3 once, row 2 of chart 2, 8 times and row 2 of chart 1 once and so on up the 24 rows of each chart.
So, yes, row 1 of all three charts is used in row 1 of the border.
And it sounds like you 've done the single most important thing to do before starting a VK pattern, and that is to check the errata online. Good luck with the coat and do please post a photo when you finish.