Thanks! I don't really know which monsters to prioritize when fighting, though, so my inexperience will probably keep me from perfect runs for a while. Especially when it comes to missions like using SRs only, and I'm not sure I could do it with Arthur. And I can't help but wonder if my Darks might do better in this, but unlike my brother I don't have Hades so I worry about having only Osiris for longevity.
Okay, I see it now. Guess I didn't realize what the table was saying when I looked at it before. Your explanation really helped! I'll have to see what SRs I've used previously that I'm willing to part with then. I have a collector's mentality, so I tend to keep stuff even when others say it's pointless. As a result, I've got a boatload of SRs I've been hanging onto and breaking as I get more copies. Like, there's that Thunder book in the union rewards right now. I have an MLB one of it, but also three more copies. I don't think that I can get a fourth to MLB another one, but I'm probably going to keep them. I could always use Eidolon orbs to break it, too.
EDIT: And thanks to you as well, kyc992! You posted just before I did.