I stood up a Yunohost and installed Mastodon a few months back. I had issues with storage and exponential growth as a result of federating with other instances.
It was just too much work keeping the storage at a minimal level for a single user instance, so I ditched it.
Is there anything like that I need to consider before I try my hand at Lemmy?
Too soon to tell for sure. Though I’m curious to see how the larger instances deal with storage growth, especially for the database.