Then you have the issue of MANNING all those shipsRaw numbers, I'm afraid. The current fleet is literally falling apart because they are not having the RnR and refit time they need. You'll need something along the lines of a 400+ fleet at the minimum for the commitments... but Congress isn't going to be giving the money.
And the Navy is understrength manning wise as is.
People are just not finding reasons to basically sell their souls to the military for quarter of the price of what they can get on the outside.
Thats before you get into the series of Toxic leadership and terrible working conditions cause by Congress jerking around the Navy chain to do shit that honestly not needed in some areas. Or should be cover by other countries but seen they been covered by the US for so long... They just dont see the need to.