Thinking about tinkering with the food @ the 1 year mark

I've been feeding Oliver a 1/2 and 1/2 mix of Nature's Variety Beef kibble and Primal lamb nuggets.  My reason for this is that the kibble fit requirements for a growing large breed mix pup and the Primal mix is 60% meat to 40% fruits/veggies.  I wanted to make sure I didn't overload on protein or calcium.

His first birthday is this week and he weighs about 55 pounds.  While he has labby looks, he is built more like a pointer or hound.  He may fill out more in adulthood, he is probably done with height/length growing.

I'd like to move him to NV raw, but am a little wary of switching from a 60/40 ratio in raw to 95/5.  Any thoughts on this?