@Maritimer Here's that little fan I told you about with the 2 feet of flex duct to deaden the noise. It keeps the room warm, lol (I hate it).
I found a new trick in my setup, I can swing the lights to aim them better using the HID fixture as an anchor and yoyo hangers to pull the COBs into the center. Doing this allows me to share the HID light that leaks off the sides of that big ass Em Dog, but between that salvaged HID photons and the COBs, I can get more total photons. Another cool thing I have in mind is the way I will load a new plant into the room is the position right in front of the door, but each new week, I will shift every plant over one position all the way around the circumference of the room and the final week will be in the center of the room under the HID, so essentially, all sides of the plant will get exposure and with all the movements and it will work like an assembly line which will make it much easier for me to visually track progress, plus it would be great for me to know where the week 3 & 4 divide is so I can prune branches at the right time. I am concerned that maybe all of the movements might be stressful for the plant's equilibrium or something along those lines, but I'll keep a watchful eye. I won't be starting this strategy until after the new year when the sequence is weekly. I still have 3 more plants to get replaced.