Is this team good? What are it's advantages/weaknesses?

[Valkyrie90]

Spiritomb (Mixed Wall)
Item Held: Leftovers
Nature: Careful (-s.atk +spd)
Ability: Pressure
Moves: Taunt, Pursuit, Will-o-wisp, Pain Split
Evs: 252 HP / 144 ATK / 112 SPD

Metagross (Physical Wall/Sweeper)
Item Held: Leftovers
Nature: Adamant (-s.atk +atk)
Ability: Clear Body
Moves: Meteor Mash, Earthquake, Bullet Punch, Thunderpunch
Evs: 252 HP / 252 DEF / 4 HP

Infernape (Mixed Sweeper)
Item Held: Life Orb
Nature: Hasty (-def +spd)
Ability: Blaze
Moves: Nasty Plot, Flamethrower, Grass Knot, Close Combat
Evs: 24 ATK, 252 S.ATK, 232 SPD

Swampert (Mixed Sweeper)
Item Held: Leftovers
Nature: Relaxed: (-spd +def)
Ability: Torrent
Moves: Earthquake, Ice Beam, Surf, Stealth Rock
Evs: 240 HP / 216 DEF / 52 S.ATK

Salamance (Special Sweeper)
Item Held: Choice Specs
Nature: Modest (-atk. +s.atk)
Ability: Intimidate
Moves: Hydro Pump, Draco Meteor, Dragon Pulse, Flamethrower
Evs: 4 HP / 252 S.ATK / 252 SPD

Blissey (Special Wall/Cleric)
Item Held: Leftovers
Nature: Bold (-atk +def)
Ability: Natural Cure
Moves: Aromatherapy, Seismic Toss, Softboiled, Thunder Wave
*All of it's stats are perfect*