Well winter is coming up and even though i live in tx i some how manage. I think i can do 4k with only my portable and central ac but of course thats without co2. Im kinda unsure if co2 is even worth it. I mean i grow perfect buds without it, so why even bother. And my yields have been alright. I have seven hoods. Four 1k ballast and three 600s. Maybe i can just buy a flip box and roll with what i got. I love designing rooms. Its like stupidly expensive lego set
Designing rooms with stupid spendy parts in them is my favorite thing to do.
Unfortunately, I've been cost cutting, so very little of what I put in a room is expensive anymore;
Vertical bare socket n cordset is only $30, and I need 1/4 as many as a flatland grower needs hoods. Tuffboxes and mesh fencing is cheap. Not buying an air pump, airstones and lines is a real money saver!
Water chiller for primary cooling means you're done buying compressors; the one unit can cool, dehuey and chill the RDWC water.
Now, let's talk operating expenses; almost everything I use is reusable, even the hydroton is rinsed and reused. The chiller operates with 30% better efficiency than AC, just because it's water. I get even more out of the system with various tweaks that let me use 1/3 of the usual tonnage to cool my ops, which saves both operating costs and up front investment in expensive equipment.
If you get cold in the winter, just haul the chiller inside; it will heat your home for free without making it stink like weed.