gram per watt

So I’m doing a 260 square foot flower room I’m thinking of using 10 1000 watt Cmh lights in it remo Nutes (love remo) soil grown cannabis I figured I should be able to pull 1 gram to 1.3 per watt my veg room is 10x10 with 2 600 watt quantum boards and 2 4 foot 8 bulb florecent grow light...

Pretty straight forward.I'm looking at getting about 8000 lumens per sq ft in a 3×6 area with one 1000w super hps hortilux so 2 sq meters would it be possible to pull a lb per plant? P.s. and this area is just a section of a room would I have to section it off with panda film?

Alright, just so no one jumps on me, I'm NOT asking how to achieve that ratio (1g/watt). I've read enough to know that as a newb, if I can even get half a gram per Watt, I'm doing pretty good. My confusion is in how this is calculated with so many different grow styles. For instance, let's say...