Top 44, the hole leads into my upper attic. I dont want to lead it there if the smell would seep to the lower rooms of the house.

I think I would rather seal the closet, because that seems cheaper than building a scrog.

I found a local 400w HPS light with an extra bulb for $125, nothing under that though...so I think I'm gonna just buy that light.

So, if I staple some foam around the door seems and add a fan in there with the 400wHPS light, and maintain the leaves with carbonated water for CO2, I dont need to worry about the temp and humidity?

I figured I would atleast maybe need a dehumidifier, just incase the light makes some heat, or the weather is humid outside.