What purpose would such work serve other than to appease the gods of cool? AFAIK the Utah was an AA gunnery training ship, I'm not sure why she would need 8" guns for that role...
You're talking about a lot of foresight and deal making....yes Utah was an AA gunnery training ship....but as an additional POD, outfitting her with two 8 inch turrets and sending her to Wake to act as a floating battery in support of the Marines has a certain logic to it....or simply sending her with her post summer 1941 armament suite...
and it is cool....but I wanted to be somewhat realistic, if you really wanted to add some firepower, you'd send Wyoming....