Sounds like you are getting into some long rides, cool. One thing I learned that comes in handy on the longer rides is Ibuprofen. It could be 150 miles, could be 200 miles, depending on the climbing, those are like 12 hour rides riding solo, no drafting. When my butt starts to hurt about 9 or 10 hrs into the ride, I do the Ibuprofen, makes the rest of the ride much more enjoyable, and really helps with the post ride recovery.