I decided to take a fresh start and created the installer with MyHack on a new USB drive. This is what I disabled in BIOS:
Internal NIC (Broadcom Ethernet)
Internal Modem (Conexant)
Parallel Port + Serial Port
PC Card and 1394
Module Bay Device
Microphone
Ambient Light Sensor
Dynamic Acceleration
Internal Bluetooth
Internal WiFi (Intel 4965AGN)
Internal Cellular
SATA Operation Mode = AHCI.
With all this disabled, I don't even get to setup. First time I tried I got a white screen (without a mouse pointer), second time it didn't even get that far. I recorded a clip and uploaded it here.
2nd try: reset BIOS to defaults and only disable internal WiFi. This seems to get me further. I get a mouse pointer and a background, but I'm stuck at the following screen:
I don't have a clue what it means. I also recorded this one, here.
Edit: it has something to do with Bluetooth. After turning off Bluetooth, I can get to the actual setup I noticed it hangs at the exact moment it tries to mount my hard drive in Disk Utility though Recording can be found here.