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Cards to toss:  The entire deck except Lightning Bolt.

Seriously, this has absolutely no chance of being even close to playable in Legacy ever.  It looks just fine for casual, but when people are going turn two Griselbrand or turn two Emrakul, the Aeons Torn + Blightsteel Colossus  + Griselbrand or an on curve Jace, the Mind Sculptor , you don't want to look down and see any of the cards in your list.

Vampires can get surprise win's, but only if you're rocking cards like Aether Vial and a fair whack of low-costed vamps, like Vampire Lacerator .     That said, you'll need a fair amount of removal, either in the form of Sacrifice effects ( Diabolic Edict etc.) and Lightning Bolts to keep pace with the decks in Legacy.  
Or a fair amount of discard in the shape of Thoughtsieze , Cabal Therapy , Duress & Inquisition of Kozilek .
Discard is the only way Vamps have a chance against Combo.

Most Legacy decks that aim for creature based aggro, aim for having a decent board presence by turn3.
As Mad Admiral says, your deck is way too slow.
Cards like Vampire Outcasts & Heirs of Stromkirk I wouldn't even play in casual, let alone Legacy.    
Why no Gatekeeper of Malakir ?  It's one of the only Vamps I consider an automatic 4-of in tribal vamps, outside Nighthawk and Lacerator.
Hexmage is also a good inclusion against opponent planeswalkers.

Try and work your mana-curve.
Drop anything above a 4-drop.  Increase your numbers of 1 and 2 drops, with gradually less 3 and 4CMC creatures in comparison.
To include anything above 5CMC, it better be worth it, as most games it'll be a dead card in hand.
Cut creatures with troublesome requirements.  ie. Nocturnus is nice in mono-black, but I wouldn't even consider it in R/B.      
Land destruction (at least of non-basics) is very common in legacy.

If you need a good yardstick to test the deck against, test your deck against Maverick, Merfolk and Goblins - you'll find them over at MTG Top8.
  

If you're looking to abuse Bloodghast, take a look at Cabal Therapy .
It's a hard card to be good at playing if you're new, but if it resolves you get to see their hand and potentially cast it a second time.

For another deck idea with vamps in it;
       Googs out "The Gate" 
It has some vamps, a little bit of disruption, card draw and some fatties to stomp face. 
It's not a tier-one deck or anything, many of the cards have cheaper alternatives, but it's a fair example of a stompy deck in Legacy that sports Vamps.
Bear in mind, tribal only works well for certain decks in Legacy, as there's not many tribes that are fast enough to compete against the unfair decks in the format.

You should probably look into Modern instead.
There's also zero reason to play Dark Ritual in your sideboard. 

There is nothing wrong with running a unique deck - props for doing it, just be mindful of how players can completely negate whatever you may do.

If you're looking for more one-drops, check my first post - Lacerator or either of the Guul-Draz are solid.
Outside of creatures, 
Discard is perfect for this, as Lightning Bolts are a reactive card, and Bump in the Night is horrible - please cut bump.
In this deckk, aim for between 8 to 10 discard spells, but I'd personally run 12 including Blightning.
Stripping their hand of counter or combo pieces, or just simply slowing them down are all good, but taking away any way they have of stopping your path to winning is VERY important.  SHould they manage to land a Moat , Island Sanctuary etc., you don't have any way to deal with it in R/B apart from Chaos Warp - which you should have about 3 or 4 of in your sideboard. 
Make sure your curve stays low so you can cast these spells in your first few turns whilst still getting threats out of your own.

Keeping the pressure on, and keep their hand full of nothing but chaff should be your aim, as there are many decks you won't be fast enough to race.

Tormented soul should only be in bloodlust decks, you have better options here.

Cards like Doom blade are good, but many of the upper tier decks run creatures you won't be able to target at all, so I'd consider cards that still hit, like Diabolic Edict or  Geth's Verdict , to compliment the Bolts & Terminate, which should only be there to clear the way for your vamps.
You'll have to balance your removal with discard, and balance your removal that can also hit a player as it's much more useful. 
To give you an example, if someone plays Hypergensis and lands an Emrakul, the Aeon's Torn on turn 3, how do you not just auto-lose?
Where I play, I see this guy at least once or twice across the table everytime I play, man I hate that card! ....so sacfrifice effects together with targetted removal to kill everything else usually does the job.
Seeing as you're running Terminate & Bolts, either of the sac effects would be solid sideboard material. 

The cards in your sideboard aren't very good.  Some of them are pretty win-more instead of dealing with problems.
Smelt is about the only one I would keep, although Shattering SPree is another good one if you have them.
Chaos Warp, Pithing Needle are ways to deal with things you may find hard to deal with.   
If you end up running lots of Discard, Extirpate or Surgical Extraction are both excellent choices to make combo players just scoop right there.