Only capital punishment fits the crime. He might enjoy prison like Richard Speck did. The killer of eight nurses kept a photo of one of his victims in his prison cell, bragged about how he could get any kind of drugs in prison, met with the press, develooped breasts via harmones to better please his sweetie, and lived a long life. His victims families had to pay for his three square meals per day and his upkeep.
Fry the bastard.