Whenever y'all have a sec, please try this build of PA with the CAF kernel (with much of my ExcaliBur code merged into it). Test for performance, battery, and music if possible (on previous builds, music was broken as long as DSP offload was enabled. I added some patches that may fix that, but don't have my M8 near me to test).
Thank you for your time (and good luck)
EDIT: Not booting. Link removed.