@black jesus I can't remember your tote sizes. Mine are 10 gallon totes I fill up a little less than half way up with FFOF. 4 plants to a tote. Two totes go into a BIN. The roots get pretty entangled. I may get 1 oz a plant. Watering is daily.
That equals 8 oz's for both totes. This is a 2'x3' footprint. So if you doubled to a 4'x3' footprint.……well there you go.
Ya I would suggest the 1 gallon grow bags as you suggested. I put 6 - 1 gallon bags to a BIN no problem. The BIN is 2'x3'. They work good for me.
I only use the bins filled with dirt to do the BKR breeding because I am not concerned about the quantity at harvest. But it's real nice to have one plant full of seeds and 7 others to just hang.
Here is a current 6 plant BIN. I think the heat is beating these up a bit. It's been between 100 and 112 in the room (at the high) for the last 6-7 days. These are not BKRs.
View attachment 3723873
All is for me and friends. That's why I don't weight. 
