a build for black knight
(i prefer 1 handed over 2 handed)

please help me decide on factions, race, weapons, suitable quest, armour, play style etc. etc.

Race doesn't matter, daedric or ebony armor will give you the black knight look. The ebony mail associated with Boehemian's sacrifice quest gives you a cool effect when you crouch in it. Play style is up to you.

Ebony armor and ancient nord greatsword or ancient nord sword and ebony shield...the ebony armor says black night all over but ebony weapons dont look very "knightly" to me

oh and get shadowmere....whats a black knight without his trusty.black steed?