Unlike Mrs. Hudson, Montag chooses not to die in his house with his books. Instead he burns them, asserting even that "It was good to burn" and that "fire was best for everything!" Are these choices and sentiments consistent with his character?

I think that at this point in the novel, Montag wanted to burn the whole society down: books are the collateral damage in this case. Montag wants to destroy his house and the remnants of his old rotting life. Destruction is a form of creation and Montag wants society to begin again starting with his house.