While I do believe his mass murder of innocent people was premeditated, I seriously doubt he would premediate his own death.My gut tells me that this killer wanted to disappear as another 'screw you' to the victims, families, community, etc. I think he took himself way out in the water, weighed himself down, and sunk his boat. It would be his final horrible act that his body would not be discovered, and he would deny everyone the peace of mind that he is dead.
The mass killer of his Texas neighbors was found four days later hiding under laundry in a closet. The massive manhunt had been fruitless until someone phoned in a tip. Hopefully, that will happen in this case.
JMO

Texas mass killing suspect's bond set at $7.5M; wife among several arrested
Francisco Oropesa “said very little” through an interpreter at a hearing, the judge said. His wife, Divimara Lamar Nava, was arrested on a charge of hindering apprehension of a known felon, according to records.
