Dont use those 100W bulbs, it will melt harness, reflector etc.
I once tried Philips 100W bulb, but i didnt see 2x more light only extreme heat from bulb.
I think HID is best and cheapest solution. I use them, although in my country also you need washers and auto light level, but if you use 4500-5000K there is no noticeable blueish tone in light pattern.
Even halogen light produce at certain angle blue-puprleish tone.
Maybe try to instal ballasts under light cluster to make in no noticeable.
I passed MOT many years with HID in Marea, no question asked from examiner