Last indoor photo grow I did, I think I did 6 wks. Temps were a little low. Plants were LST’d and only grew 2’ but with topping and spread, was about 1/4 lb per plant in the 4x4x7. In soil they are slower to preflower/sex… in the right environment they would’ve been bigger. But, about 6 wks norm… unless they are sati genetics then 3-4 wks. You’d get faster veg with hydro. I grow in peat based soil, semi organic or dry amendments like Dr earth. in my personal honest opinion, it’s better flavor with soil… and most of its for personal so not concerned with super heavy yields. Just good flower I don’t have to pay thru the nose for. Good luck with your project!