Hmm. I deleted the rom slot, re-created it, wiped data and the caches, and installed HD 10.2 with the Safestrap kernel. Upon reboot, I get the Samsung logo, the Safestrap Recovery, and if I wait or hit Continue, it goes to a black screen and remains there indefinitely. This doesn't seem right. Any ideas?
Update: Reinstalling it with the stock optimized kernel and adding the kernel modules zip seems to be working - it's at least in a boot animation right now, which could take a while it seems, so I'm optimistic. Not sure what the deal was with the safestrap kernel.