About half our feedings are rabbit. We buy medium sized cubes which contain organ meat, but not the head fur or feet. With every 12lbs of these rabbit chunks, I add 2lbs of organs (Approximately 50% Livers, 25% Hearts and 25% Kidneys). All the Rabbit and organs come from Hare-Today.com and has worked out pretty well except for the mishap I had with ground rabbit containing fur. Trust me, you don't want to be cleaning up that cat yak.
I coarsely grind all these together adding whole Prey Mazuri as I go. The latest batch I made I decided not to grind the additional organs and put them in whole to see if there was something are boy wasn't eating. Not sure how I'll deal with it if I find out he doesn't like liver or kidneys, but I just want to have a better handle on what he likes and doesn't.
One thing that bothers me is that rabbit doesn't have a lot of fat content. If your cat is starting to turn his nose up at poultry, you might want to consider adding some butter to your rabbit recipe. I haven't had this problem with Dino, but with our other cats, they all became rabbit connoisseurs and didn't care for any fowl. A pound of butter for 12-15lbs of rabbit placed the fat content in the ballpark of chicken and their are definitely some fatty acids and other nutrients in animal fat that your cat needs. Butter is just the easiest way of delivering it.
Lastly, try your best to ween them off the dry food. They start craving that stuff and then it's an endless battle to get them to eat properly. With multiple cats its even more problematic as there's always the one that's going to put up a real battle over getting his crunchers, and of course the other start dish diving.
Hope that helps!