But cats are pure carnivores. Your favorite dish in nature are the mice (see, eg, Cats would buy mice: Black book pet food), they plastered with skin and bones. You need a lot of protein and few carbohydrates.
Considering this fact, I can not recommend a complete feed Royal Canin, as there is far too much carbohydrates (cereals). (We give our skaters only once a day and twice we give them high-quality wet food (eg Macs, Bozita, Dr Alder, ...))