2 weeks of veg growth... or until roots are coming out of 4" rockwool. If i have extra cuttings I sit them under flouros until I have no room for them.. 3-4 feet high or so.
Gm and my answer for soil, from germ I would leave them for 8-9 weeks under 24 hour flouros depending on how much room you have I would grow the plant big for more yeild!(but depends on the plant) The plant will almost or better than double in size during flower. Which could be from 8-9 weeks also.