I play both aggro and madness in my current B/R vamps, but that is in standard. For your deck I would probably take a stab at the aggro and leave madness out to see what happens.
Rakish Heir is great with
Bloodcrazed Neonate so I would probably trade him for
Falkenrath Gorger.
Insolent Neonate is great for buffs since he is a one drop with menace if you hadn't considered him. I also like
Bloodmad Vampire if you are trying to build counters and buff creatures.
Stensia Banquet is a great tribal sorcery to consider for this and
Fiery Temper is awesome if you decide to go with madness. Just my experience with
Goldnight Castigator.... she will break your heart.