The high beam/DRL will have to remain as halogen or you'll have to fit an additional set of DRL's to keep within the law if you upgrade the high beam to xenon.
It all sound like a wiring monster to me but it is your vehicle and your choice.

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2021 X5 xDrive40i
2015 X5 xDrive35i MSport
(Traded) 2013 X5 xDrive35i