To late for this crop, but for future reference (everyone has a different opinion and technique, but this has worked well for me)
Use a specialized seed starter mix - I have used Espoma Organic Seed Starter mix with great success.
Use pots composed of cow manure (called "cow pots") or some such thing that will decompose in the soil. No need, then, to remove the seedlings from their comfy home.
I always put my seedlings into potting soil in a growers pot, or any pot I have on hand, until they are well established. This reduces the likelihood of over watering and eliminates any issues regarding soil composition and fertilizer - at least for the first year. (I have bee pod seedlings that, until I re-potted them recently, were still in their original potting mix, and bloomed two years in a row.)
Good luck
