Can't help but think the cheaper option might be to trade it on a KTM 690 Enduro R or 950SE. Or XChallenge, if you must stay Bavarian.
All of these "now it's the perfect ADV bike because it's so light!" modifications forget that most ADVers, myself included, could start going to the gym more regularly and take more weight off the bike than Wunderlich ever could. And where do you put your luggage?
14 R1200GS Adventure