Makin the groom cxb in a 1.2

im currently about to purchase my chips drivers/heatsinks everything i need from cutter,

but im wondering how do i work out howmany cxb for max ppfd in a 1.2mx1.2mx2m tent,

i was going to use 4 3590s at 1400 but looking over things i think i can fit more in?

<3 but it says error 404
il read through to incase of an updated

ok found it... i cant figure out what to do on it tho xD lol