Built a 4x6 grow box outdoors in the shed. It's cold af outside here in Canada but I can no longer grow indoors. I got 5 canuk seeds auto purple kush and 4 colorado cookie autos by Dutch passion as well in there and still have enough room for 6 more but I'm going to wait a month.
Looks good. I did the same, grow room inside my shed/workshop/cave. 5x5x7, just big enough to grow 4 ish... in and not too big to heat over winter. Cheers!