Homemade fluff of the Warp Angels Chapter

Here is what I have so far for my bike army that will be a combination of the Dark Angel and Space Marine codex. Parts of the fluff have been lifted from the DA codex. (Criticism/suggestions welcome!)

Following the aftermath of the Horus Heresy, the Ultramarines and Dark Angels set out to the Cadia Sector driving back daemon and traitor alike. Upon the implementation of the Codex Astartes, the legions of remaining space marines were broken up into chapters. The triumphs of the Ultramarine and Dark Angel bike companies in the Cadia sector showed promise, and thus the Warp Angels were created using Gene seed from both legions. With the guidance of the Ravenwing, the Warp Angels were structured in a similar fashion, however instead of a single company; the entire chapter is on bikes and land speeders believing aggressive hard hitting tactics to be the key to victory. Having close ties to the Ultramarines, the Warp Angels have access to their founding chapter’s armory. While the chapter utilizes bikes and speeders, the Ultramarines flyers in particular come in handy when facing enemies in the skies above the battlefield.