I planted a bunch of them and I think you want a container that is at least 6" deep when starting seeds or the taproot gets forever bent. It isn't the end of the world but I assume it wold be better with a uninterrupted taproot. I think those 20oz red cups make good seedling pots if you poke holes in the bottom.
I had initially planted a bunch of them in one pot and I was able to separate them out into individual cups without any harm. So go for it if you want to, the roots seem pretty sturdy if you are careful.