You can also do a set of shrugs before the C&P, in a pre exhaust style. While the traps are worked by the straight shrugs, they are challenged even more by the cleans and than the presses, to follow immediately. Cleans (and Hi-Pulls) are , in themselves, a very good laterial & posterior delt movement. Throwing in the press gives icing to the cake, as far as outstanding delts go. In any event, the clean & Press give great thickness to the whole shoulder girdle. Shirt sizes do go up.
Some of the stronger men I've knows have done the C&P with DB's. Outstanding strength & size builder. And a lot of them prefer one arm C&P's, insuring equal development and control to each side of the body. The C&P is a wonderful conditioning exercise for building stamina (strength+endurance). Front squat cleans and presses give a ultimate workout for the whole body. Tops for a lot of athletes. Good Luck.