plant 2 light ratio

all right here is the run down...
i have a 10 by 10 by 6.5 feet room im running 2 1000 shps .i wanted to know what would be a good number of ladys in my space?i plan on using 12 5gal buckets and i have 2 gal pots i was going to use when i loll pop top them? so how many 2gal pots should i use without taken a way from the bigger plants?
 
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