For better ventilation you will need 3 fans. One for intake new air to the tent. Second out-take old air. Third inside for air movement. The intake fan on the bottom and out-take on top of tent work best. Good ventilation with fresh air make big diffrence in bud quality.
The fan you have inside the light does not do anything to the plant. Your plant is small so you will need 6 inch fan on slow speed facing on angle to wall so the air bounce 😊👊👍