I don't feed totally raw but I usually give a handful of mixed gizzards and hearts with a turkey neck, or put several of each on top of kibble. The only organ meat I have to watch out for is liver, I have to give it with bony stuff or they get fairly loose poo. I go to an Hispanic market and get offal, something called pepitas which is mixed intestines and stomach from the look of it and chicken feet ... the hounds go ape over chicken feet!
I've added "a little of this and a little of that" to kibble , or to a chicken quarter with out separating anything. If they caught their own they would eat the whole thing in one or two big gulps, including feathers or fur.
Again, I don't feed totally raw, this is just my experience.