You have a XXLT9 Rom so search in PhilZ Thread for such a Kernel. You can also use a similar one like lt6, lt4, lta. With this Kernel you can root your phone and get a custom recovery in one step. Now you can make a nandroid of your current rom.
Now time for kk. Flash Raw4/5 Kernel and follow the instructions you wrote.
If you want to go back flash Philz Kermel and after that recover your nandroid backup of your stock rom.
Thanks for your last reply. This all makes sense to me now.
I have found a PhilZ-cwm6-XXLT9-ORA-5.08.5-signed.zip file so I reckon I'm ready to go with these instructions.
Take care and cheers.... John