well you made your kid watch return of the jedi, which has that weird scene with anakin at the end. plus the war's over and the empire or whatever is defeated and there's no reason to go backwards once you've seen the culmination.
you also have to watch #5 right after #4 so you get the DV reveal. then go back and watch the shitty ones, then come back for luke getting to see his dad's face and closure, etc.
i mean this is not brain surgery we're talking about.