Re: I hope I'm doing this right...
Welcome to the world of raw!
You sound like you are on the right track. I know some people who give liver/organ everyday in VERY small amounts but you do have to be careful. If you over do liver it CAN be harmful. Hearts and gizzards do not count as organ so you can feed as much of that as you'd like.
For the more reluctant cats you might want to start with just one thing, just the chicken breast, without the bone attached and without anything else. Once they are good with that make your pieces bigger and bigger (continue giving canned food for at least as one of their meals) so that the cats can learn to chew, it is hard for them to learn and if they are rushed they may try to swallow more than they can handle, so start small. once they can chew well you can start adding bone and everything else to make the diet complete and can stop canned food. Going one new thing at a time can also help you to tell what they do and don't like. It's possible for a cat to not eat anything in the mix because there is a gizzard on it and they hate gizzards, which is fine, you don't HAVE to feed gizzards.
Are you trying to roughly follow the 80% meat, 10% bone, 5% liver and 5% other organ model?
Remember you still need to find the "other" organ to make a balanced diet, kidney will probably be easiest to find but spleen or pancreas can be used as well, just not heart.
I do measure out my meals to make sure they are each around the right weight (For Willie that is 1.4 ounces). I don't really measure out organs by themselves though, my scale is not that sensitive. I just cut them into like quarter sized hunks and feed them twice a week. For bones I'll just give a wing or two racks of chicken ribs every three or so days, I'm not going to try and cut up stuff with bones in it. After a while it become pretty easy to eyeball the right sized meals, and you figure out how many meals a chicken breast makes, how many a chicken thigh makes etc.
I would stick to one meat source until they get going, too many changes can just make them more wary of dinner time. Once they get into eating raw though, start adding more and more meat types. whenever I add a novel meat source I do half new stuff and half stuff he's had before so I can sneak a small piece of the new in with the old and if he likes it I'll entice him to eat the rest of the new meat.
Keep up the good work and tell us how everyone does with their transition!!