Yesterday I flashed ARTMOD, and did as you said and it still stayed at the LG Logo without boot animation, is it something related to my phone? I know I'm not doing anything wrong, but it's not working for me. I discovered something, when I was going to back up Kitkat in CWM it said only 63mb needed.
>>>Backing up /boot...
Backing up boot image..
Backup of boot image completed.
>>>Backing up /recovery...
Backing up recovery image..
Backup of recovery image completed.
>>>Backing up /system...
Can't mount /system!
Woohoo, I knew it had something to do with the /system, because it didn't even boot the ROM, but not sure what it was, and I still don't know what it is.
What country are you in?
That's how I solved my problem:
Flashed Germany 10F KDZ via kdz updater on download mode
Rom booted up asked for storage encryption password
Turn it off, hard reset(volume down and power buttons)
Turn it on rom boots up, this time doesn't ask for password
Framaroot to root, freegee to unlock
And finally flash kitkat.zip and voila!