The same way you would in any other tent, just with a shorter veg period. As mentioned 12/12 from seed would do well. More important is to choose the right light and ventilation setup to get your temps dialed in.
If you run a true scrog with a rigid screen, 4' is plenty of room.
After they show sex, toss the males and drop the screen on em
Tuck tuck tuck till 2 or 3 weeks into 12/12