Dialed in! 2x4 tent 1000w

Unfortunately it's not an option with the extraction set up the way it is. The air exchange rate is too fast and the co2 would be extracted before the plants could make use. However once the 4x4 tent is in place. And the lighting in cooled independently of the tent this will absolutely be a viable option. Maybe just a couple of those co2 buckets up in the corners.

To be precise you have to factor in all the reflector and lens/glass loss of your system.

If I ever do CO2 it will be in an area lit by LEDs mostly and using water cooling to remove the heat from the room. And it will be lit to about the levels you are using per sqft, maybe a bit less.