Interesting note on the colour temperature. I thought the closer to sunlight temperature (5500k) the better. What LED lights have you tried? As they have been progressing at a tremendous rate the past few years
Looking at the specs for the Phillips Extreme Vision (
https://www.philips.co.uk/c-p/12972XVB1/x-tremevision-car-headlight-bulb/specifications) they output 1500 lumens. They don't say in the specification but further googling says they are at 3400k
If these the LED lights are anywhere near their specification (and I believe they are) then they should output twice as much light as the extreme vision.