Back on topic, and back to the bike. If you are unsure on the bike, then use some of the posts above to nail down a few generic types for touring.
Bikes as you know magnum are more than just a tool for the job. You want to feel happy on it, with its performance, looks and sound. So i would after getting a few models in mind, ring up the dealerships and test ride a bunch. specifically ones with different seating postions. Personally for my old back, hunching over a tank for long hours does me in. But you have upright sitting and legs forward.
Depending on your body size and motorbike styling, some will be more comfortable than others, the only way to know is to test drive and imagine being like that for 2 hours (your typical touring driving stretch before refuelling or stretching your legs)
Also think about where you will be parking and how you are going to deal with the bike. I guess a lot of race fields have grassy areas for you to camp on. Riding a big bike like a goldwing on a large grassy padock and then ensuring the stand doesn’t sink into damp soil overnight toppling your bike, is a real consideration.
The seating position, performance and style are the main considerations for you to look into. I am not saying don’t go for the goldwing, it will make long motorway drives a pleaure, plus no car will miss you. Just take all factors into mind.
All touring bikes have paniers or saddle bags, and todays personal tech will give you refinements that you don’t need a specialsed bike for. With a quick power connector your phone will do music, gps, communications.
You can get blue tooth headsets like the sena10c that does everything from camera (which i highly recommend for any rider) sinking up your phone, music and wireless communication with other riders (really great if you get a buddy to go along with you or chat to your missus on the back)
Due to these great gadgets, you can have great refinements on any bike.
But test drive and seating position for 2 hour stints is the best thing i can recommend