If you have one website, you will only get one location in google places. If you have more then one website you will split your ranking efforts.
do you post these prints to the customer or do they pick them up?
If you post they dont need to know where from
if they pick them up then showing the addresses will IMO get you more business than you will lose,as they will wonder why they cant know up front. Never give a customer anything to be suspicious about, getting a customer online is like trapping a rabbit, one false move and they are out of there.