Hi Mikey
I have been thinking along the same lines, starting one plant a month. Grow room on 12/12 permanently for flowering and the new seedling in a 1 litre pot on the window sill for a month then put a grow lamp in part of the wardrobe on 16/8 and transfer it to there in a larger pot for a month before putting into grow/flower room. Monthly harvest of one plant, the wardrobe shouldn't need a fan for veg, smell gets strong in flower and mold shouldn't be a problem in veg.
I put 2 seeds soaking yesterday and the 2 plants in the grow room should be ready end of this month. But then I will have to switch to 16/8 again because I haven't got the veg Room in the wardrobe yet. Ideally you need 2 grow rooms. Different as summer comes you can veg outside.