Good choice on the strain and the heater option. So the cold will be the thing to control which in my opinion is easier to deal with than the heat but that also depends how cold.I told someone else this on height so what you have to take into consideration is that with the pot you can lose about 10 to 12 inches now that tent is 6ft high and take the plant and say it is 42 inches or 3 1/2 feet now you are at roughly 3 1/2 feet you have to compensate for the height of the light which is about 8 inches(I just measured mine it is the same you would have,mine is also a cool tube 600 watt). Now you are roughly at 2'8" then lastly you need at least 16 to 18 inches from the light to the canopy so now you are at 1'2" to play with and if the plant gets bigger then that's another thing to keep in mind. Sativa dominant hybrids can pick up the height and stretchy characteristics and may even grow taller. The 3 gallon pots should help you out,because usually smaller pot =smaller plant. Right now I have 10 in my tent and 8 have the same canopy pretty much but I have 2 brooklyn sunrises that decided they would go ape shit and take over one side of the tent. They are they same strain and in the same size pot and I have one 2 inches under the lights but with more space I can move them around in a smaller tent you don't have many choices. There are pros and cons for both types you just have to find out what works for you. I guess I am just saying be prepared for anything and everything. The Devil Cream seems like a good choice for what you have going on. Also when they say a Sative or Indica dominant it can be 51 percent of one or another and it can get labeled as dominant.Just some future reference when you go to pick strains but sounds like you have a good idea of what you like.
