How many plant's can i put in my growbox

How many plants would you recommend putting in a 4ft long, 4ft high and 4ft wide grow box with 7 CFL's 5 18w and 2 11w. The picture isnt very good. The growbox will be twice the lengh of this one.

you want at least 50w(actual) per square foot and can go from 1-4 plants per square ft sort your lights out get the 42w or even 27w 18s and 11s aint gonna do much really they'll grow but itll take 4eva lol

i whould get some more lights 1st...