Interestingly, it worked out for him since his true age was just right for his younger self.
Speaking of his older face, I always liked idea that the deformed face would be his true self and that Palpatine's face would be a sort of Sith guise, it would have shown a great mental strength to maintain that and would have made Palpatine come off even stronger.
That is what I believe too since Luke wasn't deformed by Sith Lightning, just a motorcyle.