Look on Fox Farm website they have a downloadable feeding schedule.
Height, width and length of that closet? I grew in a closet for my 1st year when I started 
I think we all aspire to smoke hella weed and talk about HLG lights.
I do stand by my KingBrite lights. They are exactly as advertised and not a penny in added value beyond that, but for $150 and $280 respectively, I’m not mad.