I'm thinking they will be killing Monica not the kid ... really cement Kayce to ranch wars. Also, need new son to indoctrinate. Gotta keep that dynasty going.
Although, maybe the kid rides his new horse out and falls off and dies and it has nothing to do with the war.
Or, if Becks kill kid Monica becomes another Beth for the ranch.
So many possibilities.
I think Rip deserves the ranch more than any of the Duttons.