Looking to get the plants to ~10" and flower... Ending around 2 feet tall... Could I get away with a: 2Gal 8 1/2"W x 8"D Or 3Gal 10 1/2"W x 9 1/2"D I know a 3Gal would be best, but dirt will get $$ and such... just checkin before I buy any. Thanks!