Welcome from western Washington. UP is another place I always wanted to visit. I almost did one time while visiting a friend who lives north of Green Bay. I wanted to take that Mackinaw Bridge into UP but we only got as far as Marquette before turning around.
On the seat, yes, stock Rocket seats are a crime. You have a few options though, one being to get the upgraded touring seat with the backrest. I believe it is a gel seat but I could be wrong. I have one and it's great. Mustang also makes one for the Touring. I've had three Mustangs on other bikes and love them.
Oh and I am a former XS-650 rider, the bike that was the beginning of the end for Triumph back in the day.