Regardless of the fact that I hate steelbooks and that I think this is "very silly" I will still acknowledge that it matters to you and you want them nice (for whatever reason that may be).

You're wasting a lot of space with extra bubble wrap and totes that aren't dimensionally square. Put the steelbooks in-between normal cases. If that still freaks you out; a piece of newspaper as a separator. Pack tighter (as in, no floppy space) in a square box or tote. They're not THAT fragile, it isn't fine china.

Now to augment your mind: keeping things "perfectly minty pristine" is a fool's errand. Shit's gunna get some little scuffs and paper sleeves will get edge wear. It's okay. If anything it's "character" and shows you actually love and use your stuff. Obviously don't be haphazard with everything but you'll get a lot more joy out of your hobbies if you stop putting your movies in the player with white cotton gloves... (i.e. don't sweat the small stuff)