Others here have destroyed your Christ anti pre-exist theory.
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Now where's a chart that supports your LAST TRUMP theory ?

the last trump

1 Corinthians 15:52

15:52the last trump.Paul is not referring to the last of the seven trumpets in the Apocalypse (Revelation 8:2; 11:15), for the book of Revelation had not yet been written and Paul obviously intended for the Corinthians to understand what he meant. The sounding of an angelic trumpet at the resurrection day had also been mentioned in I Thessalonians 4:16. Trumpets were traditionally associated with calls to action (e.g., I Corinthians 14:8; Judges 7:20), and this particular trumpet sounded in heaven will call all saints, living and dead, to ascend into heaven to meet the returning Christ. It is, therefore, “the last trump” of this present age of the church.

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