You have already done the best thing by choosing a good bike for long distance traveling. Those Vulcans can eat up the miles comfortably.
Here are a few things I would suggest based on a few long distance rides I have taken.
1. Maps and GPS are good things to take. I say both, because technology is well,....technology. It will fail you at the most inopportune moment.
2. Cell phone is a given.
3. Although your bike may be new and run like a top, I would scope out where the dealerships/repair shops are along your route. Having bike trouble is not like having car trouble. You will only be able to get repairs made/buy parts at certain locations. In addition, try to travel during weekdays. Most bike shops close early on Saturday and are closed Sunday and Monday. Bikes (stock) are pretty bulletproof these days. Things like sudden generator failure/chucking master links are problems we haven't worried about since the 80's. But you know the saying, Sh*t happens.
4. Carry wet-wipes or towelettes to clean face-shields and headlights. Especially if you will be riding in the dark. Every bug in the south will target you on this ride! The wipe cloths found at gas station dispensers are like sandpaper on a face-shield.
5. Pay attention to the weather. Even with rain-gear on it sucks to be surprised by a thunderstorm that starts dropping marble, or worse, golf ball sized hail. Being from Texas, you know what I'm talking about!
6. You should be going over your bike periodically to check for loose bolts, seepage, etc, anyway. But look a little closer prior to a long trip.
Most of it is just common sense. But long trips on a bike take a little more planning than loading up the SUV.