Tbh I don't really bother with Glacier. It is a lot more expensive than it seems especially when you want to restore anything.
I generally just use intelligent tiering and it kind of balances out.
You might think "oh well I'm probably never going to restore from here anyway"
I am here to tell you that's a very foolish attitude.
If you aren't testing your backups you might as well not have them.
My honest advice if you must insist on using Glacier is to start off in a normal tier, and keep it there long enough to have tested the backups before transferring it as-is into Glacier.
It's not perfect as there's really no guarantee that data remains safe but at least it mitigates the possibility and reduces the cost to initially use standard tiers before retiring it to Glacier.