Apparently you didn't read the post or maybe I didn't word it better. The China impediment is really the issue that I am addressing by way SAARC union applying for permanent seat in UNSC.
Simple. We shall make a council or a body to represent SAARC union which will for the purpose of the regions stand on any matter in UN will act as one unit. We can do it on majority basis or unanimously. There are tons of solutions for that. The first thing we need is a seat. SAARC can be slowly turned into a single fully integrated union with a single currency for our union as is the case with Euro. The problems that arise later would be sorted later. You are thinking too much and too far over minor issues which will be dealt with deftness of diplomats. One step at a time. And Pakistan which is a sidekick in international matters would most likely join hands with other SAARC nations given the newfound influence it is gonna have on international arena.
French are simply scared of Germans. This won't be much of an issue in our case. We need to unite if we want to get out of regional power politics. There is no other way for us to rise and face our bigger adversaries.
Btw, French don't give two hoots about the Germans. Germany was, and always will be, a second-grade power, with good tech. They have a large economy, much larger than France, but the internal problems, such as their demographics, the general pacifist mood of the nation, coupled with a falling economy, has crushed their chances. With Brexit, the UK's economy is going down so much so that the British government is advising it's businessmen to set up shop in the EU rather than the UK. The British government is also too compromised by foreign actors, and Britain is teetering on the edge of collapse, with Scotland seeking independence. Once their economy goes down, the military spending will also go down.
In my honest opinion, the next few decades will see France leading Europe and much of North Africa, that is if Europe remains united. It is India's best interests to abandon Germany as they have just become deadweight to us. I would say that among the G4, the countries having the highest probability of Permanent UNSC membership are India, Japan, Brazil and Germany in that order.