I think it's always commendable when someone takes the time to teach/guide/share knowledge with others, and I don't mean to diminish the intention or effort you've made, much of this info has been available a long time both here on this forum and on the web.
One thing -- when you do the "insert" there is an option to use all audio tracks; that can be used in this scenario as well.
And, in some versions of Sonar one has to change the "available outputs" to '2' in Plugin Manager.
Saving this/the setup as a template" also can save time and be available for re-use quickly as well.
It's very nice of you to type all that up for everyone!
Thanks.