Another vote for number 2.
#1 just too in your face, too much red.
#2 the additional blue tones down the red.
#3 yikes! Too busy.

Might I also suggest going deeper ones for red and blue. Or seach out an existing tartan, Hamilton (yeah I know thats the USCG tartan and you're all Navy) of American Heritage (black is most predominant). Both availiable from USAKilts. There is alway the Arizona State tartan.