well i was going to have blue spectrum in reflector during veg and have my red spectrum hanging vertically to give off extra lumen's and then when flowering time came, i was going to switch the bulbs around and have the red spectrum in the reflector and the blue spectrum hanging vertically. That way the one in the reflector focuses on what plants need more and the extra light for extra lumen's
and for venting its a actually closet tht u have in houses tht you like put clothes in, so i was goign to throw a fan in there, and then keep my door halfway open time to time. and also have a fan in my room oscillating air so hoping that would be enought since its just 400w total and 2 plants