Isn't there a 18" or 20" maximun height above the countertop that these receptacles can be located?
I have done this several times, I agree, use just one 12-2 romex. Also you may want to keep the plugmold an inch or so from the back wall or edge of cabinet because someday, someone may want plug in an item that has a large male connector or a plug in transformer. If the plugmold is too close to the ajacent wall the transformer or connector may not fit.
