InEnduringGrowStrong

I’ve not had good luck finding something that gives me the confidence to go about it

Now’s a good time to make sure you have good backups.
Knowing you can fallback to your backups helps a lot with confidence.

You can use an adapter just fine.
Or use a 5.5" drive caddy, that’s just a little drawer that slides in and out.
Real question is it you have enough SATA connectors available.