I'll post progress here in the most relevant section.
Not much has happened in the past 3 weeks except for some mental gymnastics trying to work out the most cost effective way of getting 6 to 8 weeks of above snow life from a tent never designed or built to do so
Any progress on the rocket inspired stove I'll also post in this thread.
I was going though the skips at a local development looking for 15 litre steel paint tins when I found an end- roll of what I thought was geo-cloth, turned out to be CSR building wrap, very high vapour transmission rate. windproof and highly water resistant. Mesh ceiling problem solved
I did manage to find 2 empty paint tins too with the help of the painters apprentice.