The choice isn't mine, it is the Clerk of the Course who decides, so I'm quite happy for you to blame him
I would recommend walking the course in any event, because even if we ran the same course as Borough 19, the cones are different, the exact location will be slightly different, which is probably something you don't want to find out on your first practice run!
Oooh.. just remembered.... the Clerk of the Course (Peter Cox) has insisted he wants to do convoy runs, so walking the course may not be essential!