Death Penalty and Life is prison is way too easy my man. It's an easy way out. If psycho paths want to kill people, they will kill people. They will find guns, or have weapons made and kill people. It's not like this dude was sitting around and someone came at him and he shot them. He meticulously planned out that he wanted to kill people. He made a choice, now whether it was with a gun or machete, he was going to kill people.
Quick trial. Bullet to the head in back of the court house. Should be done in a day or two.