Worst case is getting a .5mm thick shim washer for the DS. If the wheel currently fits into the dropouts easily, .5mm won’t be a problem.

Had to do that on a bike when I went to a Sachs Aris 7 speed freewheel; even with a 9 speed chain.

And yes, the miamijim thread was all about getting the freehub body closer to the DS dropout. With 126mm Cannondales, that thread was very pertinent for me.

John