if these center pulls you want to use will reach your rims, and the only issue is the tall headset stack height for your french steerer (assuming it's not an iso replacement fork), it seems the best solution is to reduce the height of both the cable hanger and serrated washer. finding a skinnier hanger should be simple enough. (the mafac one needs a stepped ferrule as well.) but finding a shorter serrated washer will be a little more difficult. i might try to machine the one you have now to trim 1mm or a bit more from it.