lumens per sq ft!!!

woe, i jus did the math on my lumens and its over the top! ok, i have a 2x3x5ft tent where im running a 600w dimmable air cooled light that gives off 55,000 on full blast! im running at 75% so, thats 75% of 55,000 = 41,250 / 30 (sq ft) = 1375 lumens per sq ft!!! is that too much? how many plants can i cram in there? at 7000 per plant? 5 would be jus fine... perfect! did i do that rt?

its deffently fine

or is it like this... 2x3ft of floor space rt? x 7000 = 42000 lumens needed? or, i want to grow 7 plants so, i need 49000 lumens?