Do not set up prints in viewport,insted make 4 new materials(for front,top,back and side view)with prints set as texture in "Color" properties for each material).Then make 4 (POLY)planes and position them and name them regulary.The very last thing to do is to assign mats you created before to every plane.Now you only need to tweak the plane's width and height under the "inputs" tab in chanell box.I'm sure you will have more comfort during the modeling this way.Its only matter of taste.
