looks like you analyzing the numbers and taking the time to put together a well designed kit. But, FWIW i have been running 14" rotors w/ Wilwood Superlites on BP-20 pads, stock rears w/ EBC pads, no lspv or abs and a T1000 MC for over 6-years and there is no issue with the rears. my braking is...
why do you think the rears are a weak link?
i have been running 14" rotors for over 6-years and find the rears to be more than adequate.
what am i missing?