It's really up to you. Have you ever owned or shot a FF Canon?? The image quality is very,very impressive, and there's a "look" to their 85/1.8 EF lens that's very compelling when it is used on FF, at the normal, fairly close-in ranges.
Let's put it this way...for people work... if you want to shoot a man and woman,and create a standing, full-length portait shot; on the 80D with the 85mm lens, you'll need to stand 35 feet away from them; with a full-frame camera, the same picture height and width results with the camera at only 20 feet distant.
This is a big issue at times. Consider that at 35 feet, the DOF behind the subject, which is relatively "far"from the film plane, is much greater,and things are more-recognizable than when the camera is at 20 feet...indoors, the full-length standing shot is almost impossible to do on a 1.6x crop-body camra with an 85mm lens in many locations...with a FF camera, all you need is 20 feet.
These are actual, real distances. This is why so many people prefer FX for people work, at normal,expected distances, in normal, real-life rooms, churches, and studios.
