Well I have to some what disagree on the spacing between counter and wall cabinet. If you have a tall cabinet from floor to ceiling like a pantry cabinet, see what happens if you dont take that into account. You kitchen will look like hell. Yuo also have to look at height of celing, do you want a mega soffit, by going only 14" you have to put the other 4" somewhere, unless you have low ceilings, or bought 30" or taller wall cabinets. All these things come into play. Just take a simple tape measure and see visually how 14" vertically looks...it is ridiculous.