SEMI SEALED SETUP for Flowering, Advices?

Hi guys, it's getting hot. Currently i'm worried about my flowering setup, a 4 x 4 tent with nice extraction but i'm not able to get temps lower than 80-83 F during day.
i'm planning to move that tent in my bedroom the next run next month. i have 12K BTU or so of Air Conditioning in this 20 square meters room.
I will also run a 12 lt per day dehumidifier, but all outside the tent. i think i will install an extraction fan on the roof of the tent putting air back in my room, along with the usual ventilation...
Even the dehu will be outside the tent, everything set in automode with the right settings.
My question was about co2. i sleep in this sealed room 5-10 hours per night, and i'll put inside the tent an ExHale bag, mycos that produce a lot of co2.
Supposing i'm running full LED wattage (450-600 real watts) and temps around 75-80, do you think the co2 supply would be enough for 1-4 plants flowering in a 4x4 space in coco or dwc?
Thanks a lot

i am also thinking about having the dehumidifier inside the tent if i choose to run DWC, having the air pump outside in the room when the ac will bring the temps down around 67F, possibly allowing me to not use a chiller... inside the tent i'll put an extraction fan with thermostat set to work above 75 F. Co2 bag above the plants this time.. Would this be ok?

Grab one of those so you can see whats really going on. Chances are you will be just fine.