Regarding shoes, I'd suggest trail, unless it's been particularly dry throughout summer.
It's always good to have a GPS as backup. I've used Viewranger on my mobile phone before. It's a free app, and the route can be downloaded here: http://my.viewranger.com/route/details/MjIwMTg= Just watch out for your battery life though.
Regarding backpacks, there are loads on the market. I quite like the Salomon range, but there are plenty of other excellent brands. Check out the Ultramarathon Running Store, and you can use your SVP100 discount code (you will have received the code in your registration email).
As the race director for a small-scale ultra marathon (the SVP100), I just received an email from the ITRA regarding how to get your race evaluated in the future for UTMB points. On their website, it appears that they are charging €100 for this service. This service used to be provided by TNF for free.
As such, I'm interested to know how important UTMB points are to ultra runners out there? Do most of you have an ambition to run TNF UTMB races, or are the UTMB points a 'nice to have'? Any thoughts on the subject would be great, as this service is clearly going to have an impact on the cost of organising ultra marathons in the future.
If anyone would like to speak to me directly about the SVP100, I'll be running the South Downs Way 50 this weekend. I'll be wearing my green SVP100 t-shirt, with a Salomon hydration pack. Not sure about my race pace, it will all depend upon my knee (and recent snowboarding injuries)