In reply to LeeWood:
will be doing it alone, have done walks all over the world alone and nearly always end up spending time with other people on the route or at the end of the days. Have lightweight tent and camping gear, but intend to carry more cash than weight so I can use the huts when it suits, as well as eating there. I am a little too long in the tooth to be looking for the cheapest option each time.
Longest walk I have done continually is 30 days but in harder terrain of Nepal while climbing.
Pack has been stripped to the bones and looks like it will be around 12 KG fully loaded with water and food. I had planned on being under 10KG but once you commit to camping that means tent, mat, sleeping bag, stove, pots, food at around 2 to 3KG. I could strip all that out and just rough it on the days when there are no huts but a little past doing that these days.