I could never bring myself to HID a car that was not equipped orig as the lack of autolevel has driven me crazy when seeing other cars with and I could never do that...
That said.
I like the HID's color and while im 100% sure that they put out more lumens than my 9006 replacement bulbs, they are almost exactly the same K color.
The fogs on the other hand...not for me. Sure a yellower light will cause less refraction in actual low viz conditions but as we all know, those fogs are about useless in such conditions as their lumen output is about squat needed to actually push through those situations.
So for me, i felt that matching the colors of both the low/fogs which are always on at the same time with me, should match both lumen output and K ratings.
Your truck your call, not half bad and since you have a plan for it and thats what you decided on, i cant say really much of squat against it.