I can predict some solid cement poops with that diet. Half bones is too high and 10% offal wont be enough to balance it out. I would suggest dropping your bone content to 30, upping your meat to 30 and bringing up your offal up a bit.
I wouldnt really focus on dairy as part of the diet at all, they get a lot of calcium from their bones. Any diary products really wont digest.
Courage is being scared to death and saddling up anyways. ~John Wayne