You can boot straight EFI by holding down the option key while booting the CDROM and choose efi boot. If you create a GPT table (no hybrid) and use 64bit-grub (Pangolin does by default) you will have some video distortion that can be fixed after install. Connect an external monitor as the glitch doesn't appear to affect external screens.

To fix the video distortion you will need to upgrade your kernel to 3.3.2 or higher.

https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/898784

Grabbing them from the kernel-ppa seems to work:

http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.3.2-precise/

dpkg -i linux-headers-3.3.2-030302_3.3.2-030302.201204131335_all.deb
dpkg -i linux-headers-3.3.2-030302-generic_3.3.2-030302.201204131335_amd64.deb
dpkg -i linux-image-3.3.2-030302-generic_3.3.2-030302.201204131335_amd64.deb

https://help.ubuntu.com/community/UEFIBooting#Tested_configurations

Pure EFI! with backlight, sleep, suspend, wireless out of the box (all opensource, no binary drivers).