Short answer is yes! Ensure you have a complete backup of your data, and be aware that the update will wipe everything from the drive. Once you get the node set up on the new OS, you will re-import your old data. As long as everything is backed up properly, you should mitigate any disaster scenarios. You can def keep your LN channels through the update. Feel free to DM if you get stuck, I have gone through the process a few times for friends' nodes.