Need help with my first grow. Have 900w meihzi

I have tent a 2' by 4' which is 5' high
I have a Meizhi 900w Led
I have a good inline fan with duct and carbon filter.
I have auto fem Seeds
Northen Iights
Og kush
Pineapple Express
I have the basic starter pack from advanced nutrients.

I am thinking 3 plants in approx 1' by 1' by 1' pot
I am not sure what medium to use in pots?

Do I seam to be on track? What should Iexpect. Any advise is much appreciated?!?

I'd use Fox Farms ocean Forrest, in 5 gallon pots if it was me. That's what I did for my first grow & had really good results. Keep it pretty simple & you should be golden.

can you share some pictures with us?