The second amendent was crafted by the first Congress, although similar provisions existed in the Constitutions of some states, and also showed up in the state conventions which ratified the main body of the Constitution. Some states refused to ratify absent a bill of rights, others only ratified because they were promised that the first Congress would pass one and send it to the state legislatures for ratification. The BOR was passed in 1791, the peace treaty ending the revolutionary war was signed at Paris in 1783, even though the war itself ended a couple of years earlier, so we were not at war with England at the time, nor was the King George the lawful ruler, and had not been for over a decade. The memory was fresh however. The militia was not then defined in federal law, that came the following year.
Bottom line, you need to revise your arguements a bit. I find Hardy's "The Second Amendment and the Historiography of the Bill of Rights" to be very good. Also see To Keep and Bear Arms: The Origins of an Anglo-American Right, Joyce Lee Malcom, Harvard University Press, 1994. Another good source of material is GunCite which contains a very meaty excerpt from Malcom's book.