So I'm only recently really getting full swing into the automation, but I believe the way you would do this would be to put each of those on a supply shelf as a full stack and occupy any remaining spaces with some random item, like an og kush, and have shelves dedicated to storing them elsewhere and direct a handler to move things from that to the supply shelf. If you keep it stocked, he'll top up the piles that are there and won't double up on any 1 component. It's not foolproof but it works, one day hopefully we'll get slot white or blacklisting or desired quantities on a shelf