to get a gram a watt...you need co2 and environmental controllers and such. The more you cram in the room, the more yield will be effected by the fact that you are going to have medioce light penetration. you need 18" to 24" on center for enough space to allow them to flower efficiently, so keep that in mind.

No-one can tell you for sure, what yield to expect, due to different strains, methods, nutrient regimen, and grower error...
goodluck Can't wait to see what you come up with.

lw