His schedule is not kept by him also... but by his secretary whom he intends to marry one day. Bateman spends an inordinate amount of time in Ni Fantasy land. He uses Ti more then Te, have you read the novel? He utilizes his social life as a system. He studies it, how people react to each other and he comes to conclusions. He plays his social life like a game, not like he is in it actively organizing it or the people around him. he is a serious loner and seriously Ni based. His emotional explosions scream to me wounded Fe, because he doesn't go and hurt himself or hate himself, his anger is expressed to other people. he even says it, I want my pain to be inflicted upon others.
He doesn't hate people, if you see how he reacts to people, he just has contempt and disgust for humans and people in general. He doesn't actively hate on people, his psychosis is completely random and triggered by other people. This all seems to me to be an expression of some dark twisted Fe, and maybe a small dose of Fi down the tracks of his processes. but not dominant Fi.
He is certainly a messed up INFJ.