how does the spy-1 not make sense, because of the other radars mounted on the superstructure?
Well here's the thing:
you've got six radar faces when you only need four. And the two superfluous ones are clearly a different type. But here's the kicker: those two faces are
also SPY-1 (SPY-1A-C, IIRC, while the small faces are SPY-1D, which is a "mini" application).
A hull this large justifies the larger faces, four of them, and the two might be best suited on the aft superstructure for minimization of line of sight blockage.