@aCBD I think it will be too much for the 70x70 space he has. I'm going to get my friend to practice training and watering one plant first, just to get him into the swing of it. I have plenty more seeds
Got the room finished and plant in, and managed to get out before his mum came round for a cup of tea. Mission accomplished. He's pretty good with plants so hopefully a nice crop dried slightly cured ready to smoke by april
Perhaps 4 plants carefully trained to 4 upright branches each may provide a better crop than a single plant allowed to go full blast. I may persuade him to try that next