Nice post Blain.
your going to have to run both sticks at CL6
If you use CL4 I doubt youll even see a post up screen.
In this case what you should try is boosting up the 800Mhz with another value that the BIOS gives option for. you can lets say OC to 826Mhz and @ CL6 your sticks will be fine and youll gain a bit more bandwidth. gl and let us know