The media you use will depend on how humid your area is, how hot, and how much airflow it gets. If it's a bit cooler with less direct light you would want a looser mix that loses water more quickly. If your grow area if hot and has a lot of evaporation you'll want a heavier mix to hold water for longer. A general mix would be pure spaghnum. From there you can add bark, perlite, or pumice in varying amounts to loosen the soil to meet what you think you need based on your conditions. Besides that just keep it in stable conditions. Unless the plant is fresh out of tc, which it shouldn't be, I wouldn't bother with bagging it up.