7.5' x 16' growroom + 2.5' x 6' closet LIGHTING

So we have a nice room (7.5' x 16' growroom + 2.5' x 6' closet) for a blank slate to work with. There are floor vents on either side of the room along with access to the attic in the ceiling. The attic will be used for ventilation, no growing there. We want to grow lots of huge plants, but are limited by power consumption. The room will be for flowering, and closet for clones/mothers.

We are not sure what kind of light setup to use that will maximize this space for the most amount of plants as possible in it. We want to veg for 5 weeks at least to get our plants large, and are going to use 5 gallon containers. We also arent sure of our grow medium yet, should we use foxfarm soil or are the clay pellets better?

We are thinking either 2 x 1000 watt and 2 x 600 watt, or 5 x 600 watt. Either way we are putting a 400watt MH in the closet for the mothers/clones, input is appreciated, steezy

foxfarm for certain my friend...all i can give some input on...dont have much experience in large grows

here is my current idea for the room... 2x1000 watt hps and 1x1000 watt mh. 2 rooms, one for veg, one for flower, there is an ozoner, soundproofing on one wall that is shared, and a co2 burner, i want to fit around 60 plants at a time in the flower room. as you can see in my paintshop pic...