Well I would not select the graphics kext until after a successful install, that may be causing the issue, only select whats needed to boot. An Empire EFI installation may be possible aswell with that machine, but I would select these options below:

Latest Voodoo kernel on the DVD.

Slice's Patched USB kext

Sleep fix.

The chip-set appropriate to your system ( if listed )

I might would try the iAtkos Distro, haven't had any issues with that at all, thats what I use on my L305.

Here's a link to a Toshiba install guide by me. http://osx86.net/f57/official-toshiba-l305-s5955-leopard-installation-guide-t5793/
I would wait until after a successful installation to install graphics kext.

There have been alot of problems for people about installing graphics kext during the installation and not having proper working graphics afterward.

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RETIRED