Going from memory (I don't have the book), I think so. SS Monk could exchange normal unarmed strikes for ranged radiant bolts that did unarmed strike damage, right?
Maybe something like:
Lvl 3: Use a shield and throw it at a single target, ki point to return it.
lvl 6: Bounce to secondary target, 1 ki point to return it. Plus, using reaction to defend ally.
lvl 11: Bounce to any number of additional targets, 1 ki per bounce (poor man's aoe), returning no longer costs a ki point.
lvl 17: increased ranged, lightning charge,