One detail point: Although the C does carry more fuel than the A, I suspect that the difference is not so much the capacity of the wing tanks as the elimination of the gun and ammo feed system. And any aero gain from the bigger wing in cruise will be offset to a great extent by 5,500 pounds more OEW and more fuel used if the profile calls for supersonic.
If you want a long-range JSF in the strike role, buy an A/C hybrid without a gun. Unless you think you're going to get into, and win, a guns fight against an Su-35...