Select a food with the smallest amount of ash content. Ash is bad for their urinary tracts. Before you bring that new friend home I would suggest you child-proof your house, or at least the areas you want the cat to use as it's domain. And, its domain is putting it mildly. There won't be a nook or cranny that your cat won't grow to know.
Cats are curious animals and can open doors and cabinets.
The area where chemicals are kept should be childproofed. An opened cabinet door is an invitation for the cat to explore. Many families are made up of not only animal lovers, but plant lovers too. There are a few poisonous plants that are commonly found in homes. They are dieffenbachia, philodendron, English ivy, caladiums, Jerusalem cherry, poinsettia, mistletoe, and holly.