Even jerks need good herb...

To be honest, I don't play the numbers game. I play the game of maximum yield with minimum hassle, which, in this case, translates to: Are you going to shoot yourself in the foot trying to control heat in a small space under a K and end up with plants that yellow prematurely, yield poorly, herm, bolt, and set fluffy insubstantial buds? Are you going to have to spend so much money and effort exhausting that space that you would do better in a larger one?
When all things are laid on the table, I judge a plan by this simple question:
How easy will it be to maintain plant health in this setup?
The only thing you have going for ya is that one of those tent manufacturers just increased the size of the tent by about 6" in every direction, which doesn't sound like a lot, but volume-wise it is. Can't remember if it's homebox or hydrohut or if they're the same thing, lol... :jointsmile:
Don't even bother with a 4" fan. That's good for a small box, or a closet, or a flouro grow. Shell out for the 6" one. Then at least you are giving yourself a chance.

As the guy at the hydro shop says, "Sure it's possible. It's just how bad you want it" any time I suggest some odd or impractical arrangement for something...