- Figure out how to access and identify their target (date, time, location, physical appearance)
The target was a CEO of a major corporation. And his plan just involved waiting outside the hotel.
- Take enough care to avoid immediate detection before and after the fact (Why suppressor that causes jams? Why 3D print vs straw purchase/private sale/4473 @ FFL? Why mask up before and after?)
Dude was techbro pilled out of his mind. So why not use a 3d printer, if he wasn't a gun nut he wouldn't know the issues his suppressor would cause.
- Flee the scene and the state before (allegedly) getting “randomly” caught in public with all the gear and then some more, and not some invisible forensic trail like gunshot residue on hands/clothes or a cellphone GPS trail to that morning?
Because real life isn't a episode of CSI were the criminal thinks of everything but is eventually caught out with this smoking gun piece of evidence.
It beggars belief imo. Otherwise why not drop the gun immediately and peacefully wait for the cops at the scene to “say his piece in court”, or die in a police shootout, or a mad spree killing inside the board meeting that the CEO was going to that morning? Why stop at the one killing if you’re throwing your life away? Why NOT dispose/bury/cache the tools and evidence if there was a larger/long term plan?
What makes you think he had a plan? an actual plan that is. He was a well educated techbro, just because he could pull the trigger doesn't mean he could handle what comes next. Probably didn't think he would get that far.
You might want to read up the assassination of Franz Ferdinand (the person not the band in case you're confused) assassinations are rarely fool proof plans