I agree with the above poster. The only way I see you saving the topic for the adversity essay with the material you provided is if you basically reuse your diversity essay and tweak it. The troubles of having to constantly move during your formative years could be enough for an adversary essay but only if these issues continued to affect you through adulthood/college. You could then show how you conquered this challenge and now want to help others who left their home feel comfortable and welcomed in a new environment by being an RA.