If you are not satisfied with Ford's choice of tires talk to the saleman about upgrading, he will be more than happy to do so. Of course it will be on your nickel so shop around, an independent tire shop may do better regarding price and selection.
If you do go with chains don't cheap out, a broken cross link or cable will beat the daylights out of your new truck and likely tear out a brake line. Also make sure you know how to properly install them. Having driven on snow for more than fifty winters I would suggest you will probably never need them unless you plan to drive in extreme conditions. If you are not experienced in winter conditions learn to lighten the right foot especially on the brake pedal.
