Enviorement amd time for high yield with 4 photoperiods in 80 liters coco pot

I build my own grow room 4x8x6 ft, i got ac for temperature good one 500 houndred bucks, and humidifiér inventor good one 200 euros, filter big one calucated by the store for my grow room, we did it in the store with the store seller , 2 50 watt fans moveable, co2 with controller , all in canna coco 80liters , 4 strains feminized but i am not sure wich strain(critical mass, critical kush, blueberry, super lemon haze, skunk 1, girl scout cookies ), and i am looking to vegg them and strech them , lst defoliation a lot, for about 3 months and a half than switch from 18 6 to 12 12, my goal is 2.5 - 3 pounds , nutrients bio canna rhyzop5onic bio vegga and canna PK 13/14 , lights 2 x 600 watts and after 6 weeks of vegg i will add one more 600 watt hps until i switch to flower, than i will switch it vertically To light the down tops, in the middle of 4 plants .. soo is that possible ?