It's too late for me to change anything at this point in my current gameplay, but I've realized that it's best to complete the Knights of the Nine questline before doing the MQ.

Think of Mankar Camoran's character, someone whom says in his speech that worshipping the Aedra is foolish for they are dead, and Daedric worship is where the future lies. He even considers Mundus to be a former plane of Oblivion.

A Divine Crusader embodies the opposite of everything Camoran stands for. Your very armor is imbued with the blessing of the Nine Divines. It's the perfect way to take someone like him down.

This also leads to a little dilemma I have here. My weapon of choice is Goldbrand, potentially the best sword in the game if you consider both raw damage and the enchantment. However, I can't help but think that wielding it only supports Camoran's claim.

If there were dialogue related to that, it would go like this "You are here because you reject Lord Dagon's right to rule and despise the Daedra. And yet, you rely on a Daedric Prince's gifts to face me. How ironic...".

You should remember the secret of steel.

"Boethia's trinket was forged by the fire of dragons. I was forged by the fire in my heart. Goldbrand isn't going to kill you. I am."