How much height do you want?
Taller for less than half available height = Veg
Then flip, start your stretch and flower.
Or go for flip now. I run 12/12 to avoid heat.
and they still grow.
How close can you get to lights w/out burn? top of tent?
Longer, would be my choice.
Tent occupants?
I favor one and put clone in corners, down low (unfavored, but growing).
4x4x6ft or 80"?
Lights? need space lower than top tent.
Then distance required between lights and crown top.
Leaves space minus planter = remaining height you have to play/grow.
Training changes everything.
Good growing to you.
My thread for my year is available, happy reading.