Right now I run 13x 1,000 watts HPS. Think alternating each light with COB over time. Each light covers 4x5ft area. I am yield type of person. But also product quality at the same time. Requirements to pull 16 oz per light is a requirement.
Similar to my plan to use 8x COB with 2x 4ft T-5 powerveg fs+uv grow light in a 4x5 area. I am considering a small MH also. But the two T-5 with UV+FS will work.