That was my thought as well on the MN homeowner. Once he went from defense to revenge all his preparations showed a jury premeditation. Personally I have some sympathy for the guy (I can relate to the desire for revenge after a break in) but I can easily see how the jury convicted him on murder 1.
As much as I wish MN had “Castle Doctrine” for law, we do not.
So based on that and we he did, he was screwed.