Great story - thanks for posting.
Can I suggest you swap your ride for a smaller bike and carry a Sat Phone. Seriously, the GS or GSA is NOT an off road bike unless the road is well graded, smooth and dry.
I rode my Yamaha TT350 to Central Australia solo and exhausted myself many times helping folks on GS/A on the easiest of jump-ups (rocky hill climbs) or shallow creek crossing! One German lady with a GSA at Poeppel's corner just burst into tears when I told her the road ahead on the French Line had over 1,000 sand hills that I just crossed. It'd be hell riding that porky model up sand hills!