You might consider a radiator guard and skidplate to prevent road debris from bringing your trip to an early end. The skidplate will protect the exposed oil filter.
I have the R&G radiator guard and Yann's skidplate and highway pegs. I'm extremely impressed with Yann's stuff - highly recommended.
Also, a front fender extender is nice for keeping rainy-day slop off of your engine.
You probably wouldn't have guessed that I've had a blast farkling my 2012 DL650.