You know, TW has a pretty study engine and I think you'd be ok putting on many more miles before a rebuild. I have rings put in my at 7,000 miles, just because the engine was apart. I wish I hadn't. Another break-in period....was hell. There are members here, or at least on the previous site that reached miles into and over 20,000 miles. QWERTY, I believe, has put over 40,000 on his, w/o a rebuild.
I say put the money into good tires, steering bearings or other mods you deem most appropriate. I'm sure your TW with 9,800 miles is in good health. Unless of course, if the oil was never changed