That is no dilemma for me. (Nor does it seem to be much of a blessing for you.) Indeed, I am not sure why you think it such an important point.
The Moroni/Nephi issue is discussed here. In short, the Manuscript History was in error (stating that it was Nephi instead of Moroni), and the others repeated the error. However, most sources from the same period state that the angel who was in charge of the plates was Moroni, although Nephi also appeared to Joseph.
The important point is that both Nephi and Moroni were real persons, ancient prophets of God, who visted Joseph Smith. We can read about them in the Book of Mormon, which Joseph Smith translated from an ancient record by the gift and power of God.
You need not take my word for this. The Book of Mormon itself promises that anyone who reads it and asks God with real intent will receive confirmation from the Holy Ghost that it is true.
You have to admit that this is an extremely subjective means of determining the content of Scripture. Considering how easy it is for humans to delude themselves - knowing about the Fall of Adam and Eve, do you think God is going to rely on the "Spirit" enlightening every individual Mormon? For a book to be considered God's Word, we have to accept that historical witness that they give. Compare the Apostles and Joseph Smith - their respective histories and their personal virtues. Considering we see no evidence of a huge battle that took place in upstate NY, or any Golden plates, or any evidence of an ancient civilization that would prove the Book of Mormon to be true, we can say that the whole thing is pretty much a hoax. There is no historical proff that any of it existed - which casts great doubt on the whole affair. Compare this to the Apostles of Christ.
Regards
This is a dangerous circuitous route. A book tells you to believe and to ask with "real intent" and receive confirmation that it is true. The formula used with anything, word, or doctrine will lead to self-deception. First convince yourself it's true...then ask and you'll get a "feeling" or burning in your bosom that tells you your right!
The Lord tells us that many people will be deceived by false doctrines. They will say that their doctrine is of Christ, is the Way, is the Truth, and is the Word of God. But, the Lord warns us to be cautious of what man tells us, as stated in the following verses:
Matthew 24:4,5 – 4 And Jesus answered and said unto them, Take heed that no man deceive you. 5 For many shall come in my name saying, I am Christ: and shall deceive many.
Matthew 15:9 – But in vain they do worship me, teaching for doctrines the commandments of men,
Romans 1:21 – Because that, when they knew God, they glorified him not as God, neither were thankful; but became vain in their imaginations, and their foolish hearts were darkened.
Colossians 2:8 – Beware lest any man spoil you through philosophy and vain deceit, after the traditions of men, after the rudiments (basic principles) of the world, and not after Christ.
Proverb 14:12 – There is a way which seemeth right unto a man but the end thereof are the ways of death.