Scalia was giving a speech to a group promoting hunter's rights. Nothing that Scalia has ever said or written (that I am aware of) gives any indication that he does not fully support the second amendment.
Re your #8 -
It seems that Scalia was using his rifle in NY for cometitive shooting in a military school.
As far as I know, the military hasn't had a lot to do with "hunting" either lately.
But then again, the 2nd A. really isn't about the standing military, either. Although I think it was presumed during the founding that the National Military (which was supposed to be kept at a minimum) and the local Militias were supposed to be working cooperatively.
Of course, after the Civil War, the Federal Gov't. seems to have reconsidered the idea of relative local / State military autonomy, and that was pretty much the end of the "Militia" system as a serious tactical element in America.
By the mid 1890s the "Militia" became "National Guard", subject to federalization.
So much for "State's Rights", as Roe V. Wade has pretty much demonstrated.
Well, we don't know whether he supports the incorporation of the Second Amendment to the states, but then again this issue wasn't (yet) considered by the SCOTUS (which is strange, BTW).
That's the way I read it too.