5 week Bloom Power plant

I got 10 lil ones on the way, so i want to be better. I Will get one 150-200w more on the side. Is it Any idea to have 4 small lights from below?

And yeah, the 10 on the way Will be smaller.
Greatness

Something in the air or whatever to optimize.
I never see light from below, why? Is IT better to put them in the corners slightly above IF i do My 10 small ones in a sog?