the main issue i'm concerned about is a possible mineral imbalance, since it looks to me like you are feeding boneless meat. the ratio of calcium to phosphorus in a dog's diet should be 1:1, but anywhere on a range of up to 2:1 is still acceptable.
if you feed meat without bones, the phosphorus content is automatically going to be higher than the calcium content, which doesn't only affect these two minerals, but also interaction with other minerals and vitamins. on top of that, a diet that contains too much unbalanced phosphorus is not good for the kidneys at all.
i highly recommend adding enough of a calcium supplement to the meat so you have a ratio of at least 1:1.