Regardless of how many theories are out there, and the fact that the guy is a whack job, THERE IS AN AGENDA with this shooting. We just don't know for a fact what it is yet. But a person, sane or insane, doesn't amass an arsenal that big and premeditate every detail of the act, and go through the extensive effort he did, weeks or months in advance, without a mission. My guess it's one of 3 possibilities:
1. He's an anti Trump guy who wanted to kill a bunch of redneck country fans
2. He's actually an anti gun guy who wanted to light a massive fire under the whole gun control issue
3. He just wanted to go out in a blaze of glory and had some twisted need for infamy
Best theories I have seen so far. I'm leaning towards a combination of all three that you listed above. And I've said all a long since day one that this nut job was probably a Anti Trump fanatic. And Ann Coulter is just blowing hot air as usual.