I switched my kitties to raw due to allergies, and I feed ground with supplements. The supplements are not that expensive, buy them, and one bottle will last a long time. What I go through most of is taurine, but even that isn't bad, the bottle lasts a while.
I also have a kitty, like you, with bad teeth. She can eat small chunks, but if they are to large, or anything with bones, her gums will bleed, and she'll stop eating. Ground just works best.
I actually carried my raw feeding to the extreme. After not being satisfied with Hare today's consistency in quality at all, I started to raise my own meat rabbits. Rabbit worked best for mine because of the allergies. If you are going to use a grinder, I will tell you, make sure it's a good one, or you will just get frustrated, especially if you are grinding bone. We use a Weston #22, and it just rocks! Excellent grinder! I know there are others out there that are cheaper, there is description of one on the Lisa A Pierson DVM link catinthemirror posted. Be sure to check that out.
I wasn't ever real keen on switching to raw, it creeped my out to be honest, but you get used to it, and it quickly went from something I "had to do", to something "I just do". You get used to it, and it's no big deal. I don't know that I could get used to the frankenprey though, to much prep work, and way to much mess for me. I just have this image of my cats hauling raw food parts all over the house!
Where are you from? We always have extra when we grind, and could ship if you are within reasonable distance.