1800w minimalist room

Ok ,, im back in the game after a long time off ,, im mostly an outdoor guerilla grow type, i have a bunch of gear that i never put to proper use , im really not trying to put any more monney into what i got ,, am i missing something major or should this set up work?? Thanks

Equipment:

I have 3 600w hps/mh ballasts + reflectors ( wing spand)
I have a 720cfm 8" inline fan with carbon filter ,
I have a 6' long 5'wide 6' high room with panda (black white plastic ) on the walls
Passive intake near ground

I plan to use each light to cover 3'x3' , i might add a humidifyer since e house is heated with wood and makes the air super dry,

With those wing reflectors running co2 is best for them because all the extra heat to the canopy. It will be no higher than $200 for a simplistic co2 setup. Go to a welding supply store buy a tank, get a regulator, then use one of those ppm calculators
https://www.hydroponics.net/learn/co2_calculator.asp
Keep ppm at 1500 till the 4th week of flower then you can drop it down to 1000 to save on it.

Well the catch with co2 is not buying tanks/refills from hydro stores and you will save a ton. Also you can run temps up to 95 degrees before having to cool it which will save a lot on hvac.

I see bamaboy, i had forgot how incorporating co2 would let the plants tolorate more heat.. thanks