Since you have no creatures with mana cost 1 or less, I can't help but see Orzhov Charm as useless in this deck. Yeah, he saves a guy but with more Vampire Nighthawk they should be dead before they can kill.

Sign in Blood need not be more than 2, otherwise you're just drawing it (not really, but too many)

You might want more lifegain, as I only see 10 lifegain cards and I see 8 cards that hurt you. I don't think your creature base is aggressive enough to keep you at 21 to power Path of Bravery .

Otherwise, it looks quite good.

Orzhov Charm is a one and done kill spell, first and foremost haha, second of all, I don't like Sign in Blood at 4, but I don't quite think 2 will cut it, the deck this is roughly based off of runs 4 mainboard haha, and I have never stayed below 20 life (where path of bravery was involved) more than 1-2 turns, I can always recover with this deck (which is freaking awesome), and plus with the inclusion of Lingering Souls I now have extra bodies to gain the 1 life trigger off of, however, when you get 2 on the field, that is when the fun starts!

I will post how this does after tonight's FNM!

consider Dutiful Thrull or Grim Roustabout regenerate can usually tie up must aggro decks

Well I should have almost no problem with aggro because if it goes perfectly ill have a turn 1 Tragic Slip to kill their 1 drop (if not ok, and not killing a Cackler xD), then turn 2 kill another thing, then turn 3 drop either the Jedi or the flying Vampire and shut them down through life gaining and killing.