I posted a while back about cloth diapering in an apt with coin op laundry... I have a small stash of all-in-one's, and still plan on using those, but am considering a diaper service for the bulk of our diapering.... But I have question! The diaper service brings the amount of clean prefolds we request but it's on us for the diaper covers.... How many diaper covers do you think we should buy?? Any other cloth diapering accessories necessary?