We’re getting a 6x3m cabin from Dunster House which will basically arrive as a pile of planks and fittings! (It’s the “EvilGenius” which is basically two 3x3 m units together). DH is convinced that he and a couple of friends can assemble it themselves over a long weekend, I’m slightly nervous! Are they really simple for a basic but competent enough DIYer to erect? There is an existing concrete base from a previous workshop to put it on, it’s not going on bare earth or grass. Thank you!