On this issue of "the wages of sin is death":
This text, of course, never explicitly declares that it is specifically physical death that is at issue. If you are going to suggest this is really the intended meaning, you can say pretty much anything. You could say, for example, that this text could refer to death of one's hopes, or one's friendships, or one's career. To say that the wages of sin is death and yet really mean that it is only an outer physical shell that dies while the "real you" lives on strikes me as obviously taking way too many liberties with language.
Imagine if I said "Fred died yesterday" and what I really intended to say was "Fred's sense of inner peace" died yesterday". This is directly analogous to taking the concept of "death" and arbitrarily restricting its application to one aspect of the human person - their body. I simply do not see how this is a legitimate interpretation.