Linux

I'm on a Fedora Kinoite system that is entirely on one LUKS encrypted drive, I recently added a second drive to have more space and I'm wondering how I should make use of it.
For now I formatted it completely with a new btrfs partition encrypted with LUKS and to actually add I thought I could:

1. automount it to some location, not sure where I should mount it though, I've seen many questions online that say to avoid /mnt for permanent drives and also /media (there are contrasting opinions on that, though), so I thought I could maybe sidestep this question by going with the second option which is the following
2. extending the already existing btrfs /sysroot to span across the 2 partitions on the separate drives, but I didn't find good information on this process when LUKS is involved. It seems like that kind of operation is heavily discouraged due to risking data loss

So I wonder, what is the best approach and the one that will give me fewer headaches? If it is the second, how do I do it?

Edit: going with the first option I had an issue where the drive wouldn't be mounted automatically at boot, I then read through my /etc/crypttab more carefully and saw that the UUID was wrong, I had used the partition UUID (PARTUUID as seen with the blkid command) instead of the actual device UUID, after correcting that it works and mounts correctly. Just a small oversight, the hardest to notice sometimes.
References:

• https://docs.bazzite.gg/Advanced/KDE_Partition_Manager_Auto_Mount_Guide/
• https://blog.lambda.cx/posts/adding-a-second-encrypted-drive-to-fedora/