Those are just a Halo kit, not complete headlights. GM changed the sealant they used on their headlights in 07, making the headlights nearly impossible to open with the new sealant. If you want halos, I'd take alook at the Eagle Eyes projector headlights. They may be work for what you want.
If you want your fog lights to function at their best, 3100k would be best for them. The yellow light will cut easily through fog.
Personally, I would not take that all to one shop to do. I'd have different shops that specialize in each area doing the installs for each part.