Tim, a lotta hot air here!!!...
The size of those engines is fine. And like Rickb said, could be considered overpowered. But you will have at least some reserve power which may translate to maintaining speed in certain weather....and more instantaneous response in close quarters maneuvering. There are MANY boats of that size that are powered with the 120/135 Lehmans. And some singles in that same size range powered with those same Lehmans. So those engines are plenty for hullspeed operation.