The Perfect Strike feat does not seem to apply to all monk weapons, just those spelled out in the feat description. Specifically, the Temple Sword is a monk weapon and monks are proficient with this weapon, but the Temple Sword appears to be excluded from Perfect Strike. Is this correct?
There are a few questions about Perfect Strike marked for the FAQ in the APG errata thread, still waiting for answers.
The Temple Sword is better than other Monk weapons (1d8 19-20/x2 vs 1d6 20/x2, so there is a reason to exclude the Temple Sword from getting Perfect Strike advantages.