I typically allow 300 - 350mm overhang for breakfast bar areas. You can get away with less but you'll be kicking the back of the units a bit more and may not be able to tuck stools away completely. Typical overhang of worktop on the door side is 20-25mm.
1 1 cup, uncooked equals 3 cups cooked. 2  1 cup, uncooked equals 3 cups cooked. 3  1 slice, dry equals 1/4 to 1/3 cup crumbs. 4  1 slice, soft equals 1/2 to 3/4 cup crumbs.  1 pound equals 3-1/2 to 4-1/2 cups shredded.
There are 2 cups in a pint, so 2 cups of water would weigh about  one pound as stated.    However, this does not work in general because a cup is a unit  of volume and an pound is a unit of weight.