I agree with your reasoning, but the problem with the Diplomatic Guns plan is that it is not very diplomatic. France needs Peace more than anything else. So the Prussian Diplomat action is extremely important, IMO.
Also, IC, the black market guns from another country are not going to be to the gribeauval system models, so they are unlikely to be as good as French standard artillery and will play havoc with our logistics
That is fair, thus
[X] Plan: Guns and Olives Branches
-[X] Training (Infantry): You will need to turn this poor excuse of a unit into a fighting force. Costs 1 wealth. DC:20
-[X] Training (Calvary): You will need to turn this poor excuse of a unit into a fighting force. Costs 1 wealth. DC:5
-[X] Training (Artillery): You will need to turn this poor excuse of a unit into a fighting force. Costs 1 wealth. DC:30
-[X] Blackmarket Canon: There are rumors that the Blackmarket in a certain bordering nation that shall not be named, offers surplus canon for a reasonable price... you don't like circumventing the armies supply chain... but you need canon. Cost 6 Wealth DC: 40
-[X] The Staff Question: You need to speak to your staff about commanding a force this large... you are going to need to promote one of them, for a temporary position as your chief of Staff. DC: 5
-[X] Care for The Children: The children while much more relaxed than they were before the new year are still children. DC: 5
-[X] A Peace Offering: There is a diplomat from Prussia coming towards you, wishing for safe passage for Paris... He's talking about an armistice to the war. You have heard nothing of the sort? DC: ???
-[X]Protest the Invasion of Egypt (Unofficially): You should know that the French Navy is not capable of striking out against the royal navy. You will protest this invasion, hopefully, someone in the Directorate sees sense. Though you will do so privately, to not gain any unnecessary attention. Cost 1 Wealth DC: ???
[X] Plan: Diplomatic Guns
Diplomatic Guns is the only contending plan, so it keeps my vote. And while standarization of army equipment is nice, having
more guns is nicer.