I do everything at or even before mileage, much to some peoples annoyance. Keeping an eye on things often gives you good warnings of impending doom.

For that reason I would pull it apart. Not however just to replace things on a whim. Quite often you can take a component out that has had its service life, replace it with new only to have the new one fail.

Case point, old cranks are often perfect and just need new cages, seals etc to bring them back to spec or in many cases better than new spec.

I would strip your engine down, spend an evening or two measuring pistons to bore clearances, crank tolerances etc and decide what if anything you feel needs replacing. You'll soon get a feeling as to what goes and doesn't.

We build cranks for a guy that races an NF5 at the manx yearly, after rebuilding a number of cranks for him and his friends at mileage we said he should go longer. All his cranks were always in very good shape. As I recall we were rebuilding his every 1200 miles. We doubled that without fault as we had good experience with the F-III cranks which are very close to the RS's and knew they could take the pain.
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If I have to take the carbs off once more...