Id use all the light possible, and all the airflow possible. Why give the plant short rift when its going to be producing a lot of physical material? It takes Light for metabolism....
IMHO its like cutting back food, and water when your training for a marathon. It takes alot of energy to make seeds. Sure they will grow under less light. They will also develop more slowly, and also may be less vigorous than those grown under optimal conditions.
Weed is a really tough plant, and will usually adapt, but I would never cut my plants short unless I just really had to.