Yes, this problem will not occur prior to the release of the David C. Cook and the Standard Publishing's ISSL lesson commentaries but ...
The lessons come with daily readings and fit nicely into a lectionary format. However, I would like to take it one step further than the Bible Readings and Memory Verses ... I'd like to link to the highest priority resource among the Standard options (KJV/NIV) and the David C. Cook options (KJV,NIV).
I have until Sept 1 (or the actual release date of the resources) to find a solution.