A German French final peace by early August 40, works great with a strategy of de escalation by Germany, working to just reverse Versailles and re establish Germany as the predominant power.He was actually the moderate of the two camps in regards to what the terms should be as many actually wanted harsher terms for France while a small few ministers wanted more lenient terms.
It preempts French equatorial Africa going over to the Free French, and would allow the French to resist Japanese incursion into North Africa.
Britain would just crush the Italian colonies though, and the Soviets would cut off economic shipments to Germany as they would become paranoid over Germanys next steps.