Headlight bulb options not LED.

This is true with an LED but not with an omni-directional HID, it's going behave the same as a Halogen bulb in a projector housing.

 

While the headlight is not designed for HIDs, the projector will still maintain the cut off. So although using an HID projector would produce better output being specifically designed for the light source vs a halogen projector, you won't blind anyone. It is reflectors where everything goes to hell.

4300k is a good temperature. Note if you look at the Technical Specs the 4300k outperform all the other bulbs, and the Philips 4300k out perform the generic 4300k bulbs. I cannot specifically say if that kit is high quality or not but what stands out to me is they specifically call out having EMI filters (a good sign), which should mean no problem on the radio with static. If it were me I'd splurge on the Philips bulbs.

Halogens suck at efficiency vs more modern technologies. Rather than converting the majority of power to light (like an LED), a significant portion is converted to heat. This is usually a negative trait as it is lost efficiency. But in extreme cold weather climates, halogens will do a superior job of keeping your lenses clear from icing by heating the lens whereas more efficient lighting technologies will leave the lenses cold, leaving them more prone to icing.