It is true Hitmonchan has more diverse Moves in Gen 1, not including TMs at least. However, in Gen 1-3, before the Physical-Special Split, all moves of the same type were either all Special, or all Physical. Gen 1 Hitmonchan suffers from this, as while on the surface it has a diverse Movepool, all of the Elemental Punches in Gen 1-3 are Special- and Hitmonchan's Special stat in Gen 1 is terribly low, meaning the Moves will do virtually no damage.
So, you'll probably want to go with Marowak.
