How powerful are Koharu Utatane and Homura Mitokado now?
Both of them were trained along with Hiruzen (the third hokage) by the first and second Hokage (Hashirama and Tobirama) so we can assume them to be quite powerful considering that they participated in the First Shinobi War as well. As of now, they weren't shown in combat at all, not when Kyubi attacked the village or not when Pain eradicated the village. I believe it'll be safe to assume that they have technical skill and experience that they have gained over the years but since unlike lady Chiyo, they don't use puppets or any other tool to help them in combat, they're pretty much off the floor.