Masterchief87,
I think this one won't allow the same script to install supersu.zip since the special LG serial port mode seems to be missing.
It does go to fastboot directly, and unlocking bootloader doesn't need any per-device code.
But even after "fastboot oem unlock" you cannot boot directly from a downloaded image, like some other fastboot's allow. We may need to commit to overwriting stock recovery with TWRP before we can flash an unsigned update.zip
OTOH maybe the process for flashing an update.zip stops requiring a signature, after OEM unlock?