I have been changing my tires, my brothers tires, and even my buddies tires for the past 2-3 years or so. It's not too bad once you do it a few times. I even bought some rim savers recently so I don't scratch my rims anymore.

One thing I have to say is that I do not balance them. I've never had even the slightest issue in the past ~20 sets of tires I have changed and that includes everything from top-end runs to track days. My buddy just did a trackday on a set I put on for him and he didn't notice a thing.