If this were about terrorism and not religion, he wouldn't want to close the border for muslims but for terrorists, I would presume?
Replacing Scalia with a less conservative judge would be a win for democrats but it's fair game to have a different opinion. For me, however, it is most certainly a reason not to like a Trump presidency (though it has absolutely zero influence on me personally, obviously).
Trump did support the Iraq-war, unless he was lying when he replied "Yeah I guess so" when he was asked the question. Furthermore, he proposed a war crime to solve terrorisme when he proposed to kill terrorist family members (again; in a phone interview) and engages in such anti-war speech as "We'll bomb the hell out of ISIS", which, I would say, is pretty much waging war (not that I think we should just let ISIS slide...). So I don't agree with the sentiment that he's anti-war. Hopefully he's only not pro-war, like Bush was.
I said "possibly rich businessman" -- which I cannot for the LIFE of me understand why you'd call those words "dripping in vitriol" -- because I personally find it very suspicious that on the one hand he boasts about how succesful and how rich he is, and on the other hand he keeps the evidence firmly hidden. You're free to not find that shady, obviously.
I'm sorry if you lost friends over your political preference; I would certainly not have been one of them, that I promise you. But I do think you're misreading me: I'm doing my very best to stay rational (indirectly at your own request) and polite, so it's really unnecessary to feel attacked or anything. You're very much _free_ to support Trump, and I wouldn't have it any other way.