I have the same problem....and i also have a gtx 650, i don't understand what it is that causes these kernel panics, it is driving me nuts. So basically i am doomed to try and get a proper dsdt? It's just that there is so many info about dsdt and many are very old, i don't really know where to start. I have a SSDT but still no difference.
Using nvidia web driver doesn't make much of a difference, kernel panics are not that often but they are still there and nvidia drivers are kinda broken in dp7.