Be careful when playing apocalypse against
CSM: if they make their leader a Word Bearer then they can control your knight as if it were theirs' for a turn. A friend and I once teamed up for an apocalypse game and we both brought a Word Bearers lord, by the end of
our first turn 3 of their knights were dead due to in fighting. Also watch out for psychic powers which can also take over your knights for a turn.
Besides the scariness of
CSM at apocalypse level, your list isn't bad for an imperial army

.