Thanks a lot for your help, guys!
I had it all running nicely with bluetooth and ethernet working.
The ethernet stopped working after a while, though, so I tried other settings in multibeast.
Didn't seem to help unfortunately. Then I migrated my applications and user settings over from my SL clone drive. After that I lost bluetooth as well...
Tried a couple of different things in multibeast, also did easybeast and somewhere selected 64 bit graphicsenabled=no as I remembered vaguely but then I only had a very silly resolution.
So I decided to go back and do a fresh Lion install unibeast style with no migration.
Ran multibeast again and also used lnx2mac's ethernet option but I don't get that working...
Bluetooth is back now at least. So now I guess I'll have to install everything I want on there with installers, right? Or what else should I try? And what should I do for the ethernet?