In reply to climb the peak:
no routes over here, sorry.
And even worse, font is so good that you might even "get into bouldering" while you're there.
anyway if you're really desperate for rope climbs and you manage to convince one of your mates, you have the following options:
Base de loisirs de Buthiers - indoor wall
Viaduc des Fauvettes, @Bures-sur-Yvette - ancient railway bridge converted into chipped crag
Le Nautil, @Pontault Combault - good indoor wall
Saussois - mirror-polished limestone
La Roque @Les Andelys - sport climbing on chalk