Simple once cloned your netpots need to be the same size. If you use an areocloner then the netpot is just to start. They will be taken out and put in the big system netpots. No need for rockwool or starter plugs with areocloners.

Now that they are the same size for sea of green how do you plan on dealing with the roots tangleing up when you go from veg to flower ?

In a sea of green all plants in the flower room can not be in the same container or areoponic tray. They must have two nutrient zones. Clones coming in and harvest going out. They need dif nutrients.