Sue - I was actually quite impressed/proud of how well little 'Tillie' did on the trip. Being about a foot taller than you and weighing over 215 pounds, I am sure that I present a greater challenge for the R65 than you do! Riding backroads and interstates at up to an indicated 80 MPH weren't a problem, though being essentially a naked bike, it was quite a change from the Concours' fairing and multicylinder smoothness. Though, actually both bikes have some buzz - the concours' buzzy zone is between 65-72MPH - once one hits 75 it is as smooth as glass. Tillie was also very pleasantly smooth at 75. I did want for more room on the seat to slide back/forth, but with the large duffelbag I had strapped onto Tillie, her already smaller seat was a bit restrictive for someone over 6 feet tall. The seat-to-footpegs distance is also kinda cramped for long rides, but switching to the "rearsets" off and on helped to reduce that discomfort. Once or twice I felt that I'd have liked a bit more overtaking power when dodging misguided minivans and tractor trailer rigs around Scranton, PA and Roanoke, VA, but perhaps that is being a bit spoiled by the Concours' 110 HP. But overall, for a small, light, 27-year old bike she did admirably, and I'd make that same trip again on her.
I do think that it is handy/desirable to have a 'newer' machine in the stable, for those times when you just want to be able to hop on and go, "just in case".