Shawn,
Many have cured their WSMs but it does appear most do not. I fall into the DID category. Used Harry Soo's method. I believe what is truly the determining factor is your intended usage for the WSM. If it's going to be used in competitions, doing a proper cure (while not essential) is a good policy. Either way, you are looking to attain a delightful buildup of, shall we say..., gunk. Basically rendered fats with a nice smokey flavor.
A proper cure is not a one off process. It takes mulitple cycles to develop that build up. There's a section on here where Harry Soo describes his method
You can proceed with the method you noted. The only change I would recommend is to limit the amount of smoking woods. A little goes a long way.
Wishing you enjoyable BBQ and a happy mom, on her day.