Sealed & Swap: The Swap

I got Seth's deck in the swap and there are two cards that make the direction of this deck loud and clear:

Sorin, Grim Nemesis and Kalitas, Traitor of Ghet.

Seth took his deck in the B/W direction but I'm not confident of that choice.

Here's the Black:
Wasteland Strangler
Sky Scourer
Alms of the Vein
Bone Splinters
Zulaport Cutthroat
Altar's Reap
Culling Drone
Ever After
Dead Weight
Kalitas, Traitor of Ghet
 Vampire Noble
Krumar Bond-Kin
Creeping Dread
Mire's Malice
Vessle of Malignity

Now the White:
 Gideon's Reproach
Felidar Cub (2)
Emissary of the Sleepless
Thraben Inspector
War Behemoth
Alabasater Kirin
Mighty Leap
Affa Protector
Kor Castigator
Wall of Resurgence
Roil's Retribution
Devilthorn Fox
Hope Against Hope
Firehoof Cavalry

Where it gets interesting (for me) is at the Red:
Reduce to Ashes
Vessel of Volitility
Spiteful Motives
Goblin War Paint
Makindi Sliderunner
Bloodmad Vampire
Voldaren Duelist
Eldrazi Aggressor
Boulder Salvo
Boiling Earth
Bloodfire Mentor
Goblinslide
Outnumber
Ondu Champion
Retreat to Valakut

So I'm going to give the B/R deck a shot with just enough white to cast Sorin.

Sky Scourer
Krumar Bond-Kin
Kalitas, Traitor of Ghet
Zulaport Cutthroat
Vessel of Malignity
Ever After
Bone Splinters
Mire's Malice
Vampire Noble
Wasteland Strangler
Dead Weight
Culling Drone

Hedron Blade
Deathless Behemoth
Flayer Drone
Sorin, Grim Nemesis

Bloodmad Vampire
Outnumber
Retreat to Valakut
Goblinslide
Reduce to Ashes
Ondu Champion
Makindi Sliderunner
Eldrazi Aggressor
Boulder Salvo
Boiling Earth

Holdout Settlement
Scoured Barrens
7 Swamp
6 Mountain

The plan: get some early beats out, use Goblinslide to help create greater numbers than I should have, discard to stall my opponent's plans, Retreat to Valakut for damage and Kalitas and Sorin to finish everything off. We'll see how it goes!