Looking very good, Some thing you may want to try once you clean this area up is, at night I would place a very bright light Quartz work light inside the keel and go to the outside of the boat and see if you can identify the leaking areas and mark with a pencil where the filling is required, this may also Identify where you may have some freeze expansion damage.
If you view Ebb's work done in the keel / bilge area , the gussets or bridging he did from one side of the hull to the other in this area really looks like it adds a great deal of strength.
That can't be pleasant work but you've made great progress