Hey fairly, if you havent grown under LED before, if you keep the lights too close, you are going to end up with some super squat bushes. I would keep the intensity less and farther away during veg and stretch and make them grow to reach the lights. Then throw it all at them once they start to show some significant hairs. What spectrum did you get with the apollos? What did you pay before shipping for the 6's? I got a 10 recently and paid 250 USD for it.
Here is the spectrum I got, which I would do slightly different for just MJ, but I grow a variety of plants so wanted it to be general purpose.
Panel configuration w 90 deg lenses
UV: 380-410nm 1
IR: 730-850nm 1
red: 620-630nm2, 6 660nm
Orange: 610-615nm 1
blue: 460-470nm 2, 1 430nm
White: 6500 1