Just wanted let you know I finally got around to trying eveything out again.
Went without a hitch this time I'm proud to say!
This time around I was on that rooted stock 4.4.2 ROM I spoke of earlier and was using the CWM recovery that ROM installed and it worked perfect.
So no idea what happened that other time. guess you can't install straight from 4.2 or i just wasn't used to TWRP recovery...
Either way happy now