Yay, that's awesome that you guys are going to feed the kittens raw! I started my foster litter off on raw and they are some darn healthy and energetic kitties. Some good sites to check out on the topic:
http://www.holisticat.com/rawrecipe.html
http://feline-nutrition.org/nutrition
http://www.catinfo.org/?link=makingcatfood
There are some differences between feeding cats and dogs raw. Cats have much narrower nutritional requirements and it's important not to stray to far from that. You want to ensure they get the appropriate calcium-phosphorus ratio, for starters. And while dogs do great on the "balance over time" concept, cats really should have most of their meals as balanced as possible.