Good for you!
Whole prey is a lot more than 80% meat/10% bone/10% organ...I think what really comes down to is what combo your dog does well on. They are your best guide. And that's why I don't stress too much over it...It's balance over time that's important, if you feed a lot of bone one meal, follow it up with an organ or a meat meal and vice versa.I'm starting to feed Phoebe more whole chickens, turkeys and ducks, with a few livers and kidneys in there to achieve a reliable 80% meat, 10% bone 10% organ ratio. If you want to include chicken backs and turkey neck because they are so cheap, you can include beef heart as a cheap source of muscle meat to get closer to 80-10-10. It works for us.