Nothing to add on the 'which-bike-to-get' question although my .02 is that the regular GS is a mighty fine bike.
I would imagine you are wanting to get back home, but if you can stand it I would encourage you to take advantage of being overseas and any opportunities that affords you to ride in places you may never get the chance to otherwise. Now I'm not saying riding around Helmund Province (although I think the Marine Recons are somewhat known for doing just that on Chinese 125's) but riding in Europe or elsewhere on anything would be life long memories made regardless of what bike you are on. And if you have the cash Craigslist is your friend.
Good luck to you and stay safe.