Showing or not I was clearing up the issue that a Rinnegan user can use the 6 paths. It was confirmed before Nagato use the revival tech.Yeah madara taught obito six paths jutsu when obito didn't even have rinnegan. So that proves nothing. It simply means sasuke may be able to use those jutsu potentially but he doesn't have them yet.
As for kakashi level chakra, it doesn't matter since he transported full kurama while alive and susano isn't bigger than that.
Susanoo is far bigger than Kurama, Iso Susanoo is moulded to fit Kurama. Anyway after transporting Kurama, Minato was pretty much done that's why he dies.