I have done 10 gallon tubs with 6 / 3 inch net pots. I let the plants get about 12 to 16 inches in veg and they end up between 2 and 3 feet at the end. At harvest I get about 3/4 to a pound from all 6. Some do better than others. Then it depends on the strain as well. 1 gallon bags could grow a big plant in E/F. Never done E/F so I can't help with watering , sorry.

If you get 1/2 a gram per watt of light your doing good. More than that is doing great.