Search is your friend for prices, but you've covered all the basics there, headers probably not needed though. Once you get the re-map, maybe see up to +10% power and torque I think.
Paul T told me that his carbon bonnet was hardly any lighter that the stock one, so don't assume thats the case, especially if it's a wet lay-up component.
could try: http://ringrepairs.tripod.com/grime.htm Copies of (very old) MBUK articles.
I've got a copy of Howard Zinns bible: http://www.amazon.co.uk/Zinn-Art-Mountain-Bike-Maintenance/dp/193138259X Very comprehensive, but might be due an update.
Borrowdale Bash concise version today for a couple of hours. I had a bit of a spill on the Watendlath decent (bloody picture included below BTW!), but otherwise not a bad ride. Started raining before Castle Crag though which made it a bit nasty.
The Lookout
Phil at lookout.
Watendlath Cheeky Trail
Blood! Another one for the collection.
Castle Crag: