Some thought on items of gear (under construction and ongoing review)...
Boots. I've been trying out some Inov-8 Roclite 288 GTX boots. Named for the weight of each boot in grams, these are not really boots, being more like a goretex sock with a sole on it and offering almost no support. They are however incredibly light and comfortable to walk in, and unlike a light training shoe are waterproof and high enough to keep the dirt out. Not entiely convinced how long these will last, but a worthwhile experiment, watch this space!
Shelter. Tarp plus bivvy bag.
