Don't think 10-15 gallon pots r over kill indoors. It's actually the best way to get huge yields with short veg times. 3.5-4 weeks of veg max. All vegging to be done in a 6 inch pot then transplanted into a 10-15 gallon pot for flower. 2-6 months worth of vegging is over kill. Just my opinion.
I was thinking the same. I do 1000 gallons outdoor Id like to hear some one say it's over kill lol