Thoughts
All I would really care about at this point is the balance of power in the lower left.
C9 is tempting as it prevents white eyes on the side, but then white can counter attack around F6. So I’d rather have it the other way around, pressure white from the outside and force a reply at C10.
I’d love to play G4 but I don’t see how black can resist a double hane. So I would take some distance and play H5.