A bit off topic but I love those R1100GS models. Still one of my favorite GS models.
Smart move keeping it, I think you would regret selling it.
One of the things I learned from conversing with the boys at Woody's Wheelworks is that the 12GS stock set up is almost ideal for road riding. My experiences on the street confirm that IMO. While the HP2 21/17 combo is great off-road and the 17/17 combo is great on the track the R12GS 19/17 combo seemed to cover all facets. That's my experience.