The first move seems a bit reachy at first but using a good heelhook jam with the right foot makes it doable for shorter people. Really fun moves and a rather bad crimp :)
Rain sucks, but broken holds suck even more. Remember, never climb on wet rock in Fontainebleau.
The sandstone becomes brittle, and pulling on it will ruin classic problems. Drying it doesn't help, because it's still wet and weak inside.
All you can do is wait for better conditions.