What is needed in Sun City is the ability to age in place. Hard floors (no carpet), wide doorways (at least 32 inches, but 36 is better), a roll-in shower. Trust me, you will never have a shortage of renters if you build an accessible home. When it is time to sell, you will have people waiting in line to buy it.
Easy maintenance and durability is the key. Granite countertop is best, Corian is nice. Depending on how extensive the kitchen remodel is, including taller upper cabinets will make a big difference. Refacing the cabinets and installing new doors will make a good difference for a lot less money than replacement. As far as flooring is concerned I would definitely go with tile, 18" or better. Try choosing from a neutral color pallet... I retired from construction and remodeling few years back and I have done flips and have been a landlord. For a quick sale at a profit you need to think more of how the buyer views the home. When you are thinking of renting it out think of durability and your expenses when turning the property.
Buyers and renters like wood cabinets in a neutral to dark color with granite countertops. Tile flooring is always desirable as well. Where is your home located in Sun City? I work with many sellers and landlords and would be happy to help you. I have extensive recommendations from my clients on my Trulia..com profile. that you can see by clicking on my photo to the right of my answer here. Thanks for the opportunity to work with you and I hope to hear from you soon!