He reckons they weren't naive going in then tells us they discovered that living in a couple would be considered punishment it was that difficult, I worked that out myself within a few minutes of thinking about it, they planned that trip for eighteen months. And the bit about the drinking water, seven months they suspected it, I realise they may not have boiled the water 500 years ago but people probably learned quite quickly to set up by flowing water. I'm glad they enjoyed what they did and got fulfilment from it, and I've also enjoyed watching it, but they went in there with a romantic notion that they would be okay and it was as much luck as skill and knowledge that saw them survive.
On a smaller scale you should remember that Drew, living outside is life in itself a lot of the time and if you start trying to fit work round it as well you could find yourself very tired very quickly. Finishing at 5 in the winter and then having to get a fire lit in the dark before you can even have a cuppa could be very wearing.
I realise you plan on still partaking of some of the trappings of modern life and I think you should never underestimate the ability of Mum's Sunday roast and a warm bed now and again to raise your spirits.
Good luck if you decide to go through with it.