Respectfully I disagree. Homo cowardly bigots love prisons surrounded by other maggots like themselves. He’d be a hero in the slammer. Mortality scares a man with no god. The firing squad or hangman’s noose works better. Then, an unmarked grave so they cannot make him a martyr.
Well if we are going that route:
Deep in the forest, nearby ant hill spikes driven into the ground, chained to the spikes, honey poured on head and body, gag in mouth, hop in truck and drive away and return in a week to see how he is doing.