Cree cobs are definitely an upgrade. Based on my other grow finishing in here, should be close to 1.5gpw, where I was happy getting .75gpw before. My electric usage was nearly cut in half from my total upgrade too, though it takes a while to see those electrical savings back.
Heat was my biggest issue, main tent had a 600w HPS, and last year some days were so hot it had to be cut to 50% power. Opposite issue now, these cold winter days have my temps hitting 60℉ in dark, so I cranked lights to 24/7 to keep everything warm. My wife made a good point to me the other day, even at 6 hours extra light a day for my whole setup, it's only $20 a month. I need less than a 1% increase in expected yield to cover added electrical expenses. So if 24/0 lights pull 2 grams more in this tent than 18/6 would, it's worth the added monthly costs.
Hoping these do well, they're in the 2gallon pots, so a simple 1oz per nets 500gpm2.
The Jack47s look great, I have high hopes for them. Considering trying the f1 photo periods, curious whether autoflowers or SoG clones would produce the most yield the fastest. I figure 2 weeks to clone, 2 weeks to veg, 8 weeks to flower puts us at 84days, where most autos are done.