I have never found Jewish religion interesting enough to adhere to its concepts. Some of the Jewish legends, particularly the apocryphal ones, interest me but I see no reason why I should respect the Jewish version of...anything! I understand that you are Jewish and so that may be influencing your opinion on this.
Devil Worship is not a form of Christianity. Even if a person believed that Satan was a fallen angel, they would still not be a Christian. My form of Satanism is a form of Dark Paganism, you could say. It makes no sense to claim that someone like me is a Christian just because we make use of some Christian symbols. What exactly do you think a Christian is?
You should read this: Devil Worship - Black Goat Cabal
Of course my Jewish background biases me - I'm human . But I do find it strange one would choose Christian myth over Jewish myth. The reason you should respect the Jewish religion is that if there's truth to any of this Judaism told it first and Christianity perverted it. Even just logically Judaism makes less contradictions. The reason I say that what you're doing seem an aspect of Christianity is you're heavily relying on Christian aspects of... well, almost everything. The whole view presented is very Christianized.