If you're interested, I have some mystery Annuum seeds I got from romy6 that'll kick up the heat a few notches. They're a small chile with an elongated heart shape, thin flesh so they dry well and pretty good flavor. Great for powder. I also have some Mexican Goat Weed Pubiscens seeds I got from stc3248 that are extremely hot. I start my chiles upstairs where it's warm, but move them down to an unheated basement when they get too big to keep upstairs. My basement stays a constant 50 degrees all winter. They get a little heat during the day down there because I enclosed the growing area in a 5-sided box made of three quarter inch styrene board faced on one side with reflective film. It traps the waste heat given off by a four foot t8 and 2 four foot t12s. That's enough to raise the temperature up to about 80 degrees when the lights are on.
The construction is just a $20 sheet of foam board and a roll of duct tape. I cut slots for the cords that I raise and lower the lights with inside the box, and covered the slots with some rags. Cheap is my mantra...