You are a god!
Ok extensions are
AppleACPIPlatform
AppleSCPIPS2Nub
ApplePS2Controller
FakeSMC (yours)
IntelCPUController
Ispcidrv
Patched_10.7_AppleRTC
Not sure exactly what fixed my sleep, but it works now. I was already running BIOS A17 with the recommended settings.
I could never get the kextcache to generate, it seemed to have issues with IntelCPUMonitor.kext - no dependency found for org.netkas.FakeSMC.
Thanks again!