Earlier quoted context omitted.
Neither of your theories answer the question -- how did he know that the CEO was staying in a hotel other than Hilton (conference venue) and would arrive by foot 1 hour and 15 minutes before conference opens at 8am (CEOs do not typically arrive so early in advance). The shooter was caught on camera talking on a burner phone 15 minutes before shooting. Who did he talk to? Was he acting alone or received some help? The…
This is my sticking point as well. The bullet messages only made sense for this specific guy and that’s a whole lot of work to engrave bullets, take a multi-state bus ride, camp out in a hostel, etc if you’re not 100% sure the guy is going to be there. I’d feel more confident if he’d staked the route out for multiple days or if there was a plausible backup plan like breaking in to the CEO’s hotel or the conference.
For all we know he made 15 attempts before this.