Would a Holocaust survivor be an appropriate guest in an 8th grade history class?

I am an 8th grade history teacher at a school in Memphis TN, and I am currently teaching my students about World War II and the Holocaust. I remember when I was in school, my teacher invited a holocaust survivor in to speak to us and answer our questions. I thought it was pretty interesting. My grandfather was in Auschwitz for several years until 1945 when he managed to escape. I’m just concerned that my students might be too young for someone like that. Do you think so? I’m sure he’d have many good stories to tell because he conducted a lot of experiments there and was actually a close friend of Dr. Josef Mengele.