Thanks for the replies guys.

With a bit more research I managed to find some more kexts (including the voodoo power kext) which got QE working and the battery indicator. They also fixed the trackpad issues.

I tried the beta drivers for the built in wireless but they didn't really work so I ordered a replacement mPCIE wifi card which should work OOB as an Airport device.

So then the only other thing that doesn't work is the built in webcam, which is terrible anyway and isn't really a priority. So really, that takes care of everything!