This is a gruesome thought, but it is exactly how two pervs in Massachusetts got rid of the body of the 10 year old boy they raped and murdered. Just one drum, though.
Wouldn't Peterson have to be flying high on meth to do something so brutal and bloody....hack up his wife and baby to fit them into three drums? Where would he do it? How would he ever clean up all the blood? Maybe at the warehouse.
This type of conjecture is why some here call him Scotty Soprano.