***Disclaimer*** I have barely tested this (too busy) so I can not attest to it's smoothness, stability, battery life, etc... so think of this as an all invited test session.
nothing, but let me know
1.) download ROM and gapps and put them on your SD (internal or external)
2.) boot into recovery (TWRP it's better)
3.) wipe data, cache and dalvik
4.) flash ROM and gapps
5.) reboot and let it sit for 5-10 min
7.)I would also recommend disabling, or changing the gravity of pie control, so the very bottom of the screen works correctly. (We don't have onscreen keys) settings>system>pie settings>trigger area>none