Neither die will be long enough to deprime. You need a deprimer die (universal) or a way to deprime at the range if you are shooting BP. I don't have a 43 of any type, but I think you can neck size with pistol dies and then seat your boolit with pistol dies. If you are shooting single shot you don't need to crimp unless your boolit is not heavy enough to let the powder fully burn before it begins to move. This is true with the 405gr or lighter boolit in the 45-70, they need to be crimped. The 500+gr. boolits do not need a crimp.
BTW, welcome to the site. If you do need a full set of dies Dave at CH4D probably has them on the shelf. If not he will make them.