Honestly, skip the front leveling kits on 1/2 tons. We put them in all the time at the shop and I cringe every time I do it. I do not view it as an upgrade.
The suspension geometry gets extended to the max with these things with the coil spacers. On reassembly it's incredibly easy to break IWE actuators due to the simple fact that the CV shaft no longer slides readily back into the hub. The angles are all off. On trucks that actually hit mud (up here it's patch trucks) the IWEs take a pounding and get replaced frequently. The street trucks are less susceptible to this, but still ...
Also, if you do it on a 14 then have a bit of patience. It's a bit more of a challenge to get the coilover out now that Ford has done away with the single lower bolt. The Chev style lower mounting offers increased hassle. You will end up disconnecting the stab link for play, and when you pry the upper arm down to get the ball joint back into the knuckle you'll have to darn near bend the thing into the spring.
My honest opinion is that the 1/2 ton does not respond well to lifts. The Super Duty on the other hand is much easier and reliable when it comes to this stuff.
If you do opt to lift the thing (and a leveling kit, despite the euphemism, is still a lift) then obviously get it aligned and aim the head lamps as others have suggested.
2003 GMC Sierra 3500 -- dually, 4x4, hasn't blown up yet and that's what i look for in a truck
Ford Doctor -- They come in broken and leave fixed. Ford of Canada Master Tech