Well, my kitten Joyeux came already on a raw diet. I put raw down for Kahn one day and he looked at it and looked at us and said, what the hell took you so long? Then he rolled his eyes and gobbled it all up. (We had serious issues trying to get him to eat anything, for two years, and then the only thing he would eat was those Gerber Turkey Graduates meatsticks, and we'd sneak a little dry in with it, which he tried to boycott as much as possible).. so, apparently he was just waiting for us to figure it out. He's also an F3 Bengal, though, and still very "wild" in a lot of his ways.
The other two will eat some of it, they're mostly on a dry diet. Every once in a while they'll take a chomp of it without me having to mix it in to wet food..
However.. when I do mix into their wet, I have to take their dry away and not free feed them. They're not really big wet food lovers either.
On the grinding.. we used a food processor when we were making it into ground. That worked fine, but don't try to do bones in it. If you're going to do bones.. I think it's catnutrition.org advocates a particular kind of grinder. You could probably add bone meal, though.. we've been talking about doing that. Mine boycott the calcium additive. As a supplement (definitely easier at first, till you get a correct mix, and fairly inexpensive) we use WildTrax. It's like $18 for a 3 lb container, and I don't think we've even gone through a third of it since we bought it in December.
Now, though, instead of grinding, we chop it. I find if you're going to chop it.. put it in the freezer.. usually I'll put mine in there in fairly thin pieces, then pull it out when frozen, and run it under mildly warm water to thaw it just a tad.. *then* cut it into chunks. It's insane to try chopping/slicing when it's not frozen. It takes me about double the time.
If you're just trying this a few times to see if they like it, I don't think you need to worry about their nutrition too much, because you'll be feeding them other things that are balanced nutritionally. I personally wouldn't worry about it until it's their sole or main source of nutrition. Then you can go to the few big raw sites out there and figure out what you might want to put into it.
Chicken is a huge hit at our house, and lamb went over pretty well. Beef is a nice occasional treat, but they'd mutiny (and do) if we tried to feed it to them every single day. They liked turkey too. They haven't had venison yet. Sometimes you just have to try a bit of this and a bit of that. Lamb also seems to be rather hard to digest?? One sensitive tummy here pukes every time she eats a bit of it.
Anyway, I don't need to make the post any longer than it already is.. sorry!