Hi fjell guy,
Good luck for the weekend, make sure you don't go off too fast, otherwise you'll be visiting a world of pain later (probably):thunbdown:, you still have a chance to get some trail shoes and get them worn in, depends how you are with new shoes?, I'm quite lucky in that I can just get a pair and get straight out and not worry, will you be in road shoes? you could be ok in them, some one with more knowledge of the course can advise.
All the best :thumbup:
Andy