This looks like a good start, but I would advise cutting
Bloodmad Vampire and
Stensia Masquerade. Bloodmad can get chump blocked and killed, which is extremely poor value for 3 mana (even if you cast it for madness, it's still not good . . at all) and the masquerade does nothing on it's own, which is downright bad.
Lightning Axe into
Alms of the Vein is golden though, I'm running 4 of each in my deck and it's worked out wonderfully. Take a gander;
https://deckstats.net/decks/13446/459802-vampiric-madness/en