I dont have any issues but i have a process i use when flashing new roms, really heavy customized roms. Factory reset or Odin back to NC5
Just make sure you are 100% on NC5
Also yes it will send you back to TWRP after the install, not sure what it wants to install but i am sure it would have probably flashed the PRL but since none of us have the factory recovery, we don't know but it does not affect the install.
no issues with the play store <-- clear play store data and cache
no issues with the sms/data/mms <-- if you do check your APN
Also do not try to update the firmware while rooted, it will not complete