[ONE Q&A, Help & Troubleshooting] Timmmmaaahh!:
I refuse to believe that, lol. You might be better off asking ahead in the LK thread here, I have no experience with that kernel. In general, you can try combining any kernel with any ROM! Some will work, some will fail (bootloop). Those that fail can be reset by dirty flashing the ROM on top of it, that will reinstate default kernel values dictated by the ROM. In theory, you can't do much wrong this way. Of course you better wipe /system entirely before hopping to another ROM. Also wipe /system after you added blobs to the mix and want to get rid of them, those things can be stubborn (kinda like the movie version of The Blob).

Hey there! I peeked at your history and noticed you almost went on this adventure in January, what stopped you? I realise the whole flashing game can be somewhat intimidating, more so if we're risking a $300 device! Generally speaking it's a rather safe practice and it rarely goes so wrong that the device gets beyond software repair (hard brick). There are several guides out there that allow you to return to 100% stock, even when the device shows absolutely no sign of life. There's one important side note to this: once you unlock your bootloader, you can only re-lock once. If you want to unlock it again, you'll mess up your OPO real good. It is wise to keep oem unlocked once you did that, I speak from experience.

Most unlock and root guides out there are still valid because the system you are using is equally outdated. If you care to venture the process, you can safely follow them. If you're hesitating, provide me with a link to said tutorial and I'll be happy to screen it for you. There's a few things you need to use newer resources for: recovery, LOS, a ROM of your choosing and Gapps. For recovery, I recommend this version of TWRP (the one I'm using). To get your device up-to-date, you must first flash Lineage OS after wiping (and backing up! Do that first!) your stock setup, download latest nightly here. Make sure to fully boot LOS and then return to factory settings in recovery, that will ensure a fresh start for any ROM you're about to flash. Get the latest Gapps from www.OpenGapps.org (choose ARM/7.1/Nano). Put both the ROM zip and Gapps zip in the root folder of your internal memory (/sdcard). Then you only need to flash those and you're ready to go! If you want to start simple, you can just flash Lineage OS and Gapps, then use that for a while. Lineage does not include root by default so you'll be residing in a safe environment, which covers your earlier concerns.

If something goes wrong (bootloops, screen turns off, device won't boot,...), do. not. panic. This can be very overwhelming - the idea that you just broke your device - but there's seldom a situation with no escape. Some people I this situation will have the reaction of attempting all sorts of flashes, frantically looking blindly for a way out. This is a very bad strategy, I can promise you that. If something goes wrong and you're unsure how to proceed, be patient, post your problem here, where there's a whole community containing plenty of expertise (ironically due to our own failures) to guide you every step of the way. If you're willing to put up with my seemingly endless jibber jabber, I'd be happy to help you when needed. I've already written an elaborate guide on main issues and more in depth instructions on flashing that you can find here. Happy flashing! =)

Sizzled with Bacon ?