This boulder has some high heels to start with, followed by some moves around the arete. To go to the end hold feels a bit off in the beginning. There are people who go with their left hand and people who go with their right hand, so it is up to you what beta suits you!
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.