I can only imagine over how many bottles of wine and copies of the mole catchers guide to the Galaxy you managed to dream this one up mate !!! I don't think you've give it any reall consideration as to numbers of people likely to turn up.catering,parking,prizes,I've a get out clause for you,have it on the same Sunday as bisley southern hunters and that way your guaranteed to just have spongey and yourself there with this love hate relationship you both have in that you hate him and he loves it.Spongey could do the sandwiches there bound to be jam although I wouldn't have one I've seen what he does with his hands,you could also have a shoot off for 3rd place I'd pay to watch that and still have time to get to bisley for me to book you in.