Hello Gordon,
Sounds great, I am only going on growing tomatoes but found a few weeks makes a huge difference in terms of how they grow! How does the colour curing work in the box then, is this where you use the lightbulb for heat and seal it up to remain the humidity? The curing part is where I am thinking it is going to be a bit more complex... perhaps a trade of some plugs then as I have got a selection of seeds from tobaccoseeds and have got about 5 different types - black mammoth, big gem, banana leaf, aztec rustica and african red. Are you growing for RYO? I smoke a pipe occasionally and also interested in cigars.