Welcome to the shipbucket. As for Your ship... I guess it can be made into workable design, but I see some problems (and I suppose that Members who are more experienced in modern technical stuff, esp. US may see more of them).
First of all - and this one is more "formal" than "technical" - if You have indeed used hull drawn by someone else, You'd have to credit that someone.
Then there are shading issues.
I have reservations about funnel arrangement (too tall - maybe try to shorten superstructures a bit? - it's very top heavy), and I think that the whole 3D radar/aft funnel/SPG radars/Phalanx "grades" could be lowered - I believe Phalanx has practically no deck penetration so You don't need so much space above hangar door to support it, and therefore all the systems above could be located respectively one deck lover then they are, except for the 3D radar.
Positioning of liferafts looks odd, but maybe it's just my impression.
(these are just a first impression issues)
And the backstory...
I mean... basic (VERY basic - that South leaves the Union) premise is ok, I suppose, but the way You presented it.