Yeah, i know what you mean, my grow room is also home made. Grab a folio from the kitchen and cover the inner walls. The pots are small but also your room, so i think you are okay beacause you dont want them too big. But its gonna be really bushy down there so be ready to cut some leaves just to make some space for the light to the lower buds. They look just fine for now.For how long they are in veg and do you spay them with water ?