I am on a trip around the USA right now and before I left I added luggage. I chose SW-Motech panniers and top box. I got the larger size panniers. It gives me a feeling of security to be able to lock everything up or take the boxes off whenever I need to adjust the chain. As far as off road, I would suggest TKC80 tires which work well for hyway also. The rear tires will wear out twice as fast as the front tire. But they are smooth riding tires even on the hyway. This bike is really not an off-road bike but dirt and gravel roads you will be fine on. Also get a good windscreen it will save you from eating so many bugs. It will also keep you warmer. I chose to go with heated gear which is very easy to add to the bike. Heated grips, jacket and pants. It makes traveling in the cold so much better.