When to eat the Purim Seuda this year II?

I saw in a number of halacha sefarim that this actually is a recognized minhag, one sefer brings down that this was the minhag in Ger, Piskei Teshuvos brings a Meiri in Kesuvos 7a who says like this. From all of this we see that this is not a wild idea but an idea that has it's backers.