Rate my team

[liquidsnake]

i kept switching trying to see what i should do.i think its a good team but,if you think i should replace someone tell me and i wouldn't minded testing it with you

Sandslash(Impish Nature) 354HP/243ATK/344Def/113Sp/Atk/146Sp.DEF/166Spe
item holding:Leftovers
moveset
EQ
Stone Edge
Stealth Rock
Rapid Spin

Venusaur(Calm Nature)
364HP/180ATK/202Def/236SpATK/328Sp.Def/196Spe
item holding:Black Sludge
moveset
Sludge Bomb
Energy Ball
Lech Seed
Sleep Powder

Gengar(Timid Nature)
239HP/149Atk/126Def/329Sp.Atk/180Sp.Def/316Spe
Item holding:Choice Specs
moveset
Trick
Focus Blast
T-Bolt
Shadow Ball

Swellow(Jolly Nature)
261Hp/269Atk/156Def/122Sp.Atk/136Sp.Def/383Spe
Item Holding:Toxic Orb
Moveset
Protect
U-Turn
Brave Bird
Facade

Gallade(Adamant Nature)
265HP/364Atk/162Def/139Sp.Atk/247Sp.Def/230Spd
Item Holding:Choice Band
moveset
Close Combat
Psycho Cut
Night Slash
Ice Punch

Latias(Modest Nature)
299Hp/150Atk/205Def/345Sp.Atk/295p.Def/318Spe
Item Holding:Choice Scarf
moveset
Surf
T-Bolt
Draco Meteor
Trick