I consider myself a rookie as well on this front. I think that is #1 is fine in the application due to the relatively short cure time, but do not know that to be fact. In my limited knowledge on this, cure #2 would seem to make more sense.
When I was looking into doing this, many of the recipes didn't call fo any cure at all (other than the packing in salt). Utimately I decided on using the recipe by Michael Ruhlman since he is considered an expert and his called for cure#1 so that is what I went with.
So ultimately, you can say that I don't really have an explanation.
Just kind of did what Ruhlman said.
Wish I could be more help.