The Crusading Angels

So I started my army recently, based of Dark Angels but double down on the Templar Vibe. In my head They got fed up with the Angels during 3rd founding and did somewhat a black Templars move and went for a Crusade against the heretic for the God Emperor. My Idea was that they worked closely with Adepta Sororitas on many campaigns and got influenced to create More civilized than Templars like Dark Angels Chapter with A splash of Adepta Sororitas beliefs.

I just need someone to help me out to put the lore and Codex "Compliance" together and I want to retain the Wings Concept of the Angels, and figure out how the Companies work.

Like I said I'm quite new to this hobby, but I would love to be lore accurate even tho GW have problems with it.

So I need Help with figuring it out. I have thought of a simple paint scheme which is Mostly Dark Angels with a right arm painted more Black Templar and the Terminator squads Black Templar scheme with a wraithbone cloths.

In essence this is a Dark Angels army with a twist of being zeloth believers in the godhood of the Emperor and Crusade for that reason when it comes to mechanics I don't feel comfortable to poke around yet with rules

To my fellow Brethren FOR THE EMPEROR