Are you looking for help only to rent it out or do you want someone to manage it too? If you are looking for help only to rent it out, I would recommend an agent with experience in the local rental market in Sun City. If you want someone to manage it, I would suggest someone that is also managing a few other properties in the area. The rental side of real estate is a volume business.
Thanks for requesting more information! I am a highly experienced property manager and have extensive recommendations on my Trulia profile that you can view by clicking on my photo to the right of my answer.