First Grow! Closet grow? 600watt

Well this will be my first grow and i just joined here and hopefully with some help ill be up and growing soon! I have a Closet 3ft 10inches wide and 4ft 8inches tall and a 600watt light? My First question is should i just paint the walls white? second how many plants do you think i could grow with high quilty? Strained i was thinking Lemon skunk? Help a fella out?:leaf:
 
Top