D/P team for a friend

[Shiny Umbreon]

I made this team for a friend. Tell me what you think about it:

Heracross @ Salac Berry
Nature: +Spd, -Sp. Atk
Trait: Guts
Megahorn
Brick Break
Endure
Reversal

Porygon-Z @ Life Orb
Nature: +Sp. Atk, -Atk
Trait: Adaptive
Recover
Ice Beam
Thunderbolt
Shadow Ball

Snorlax @ Leftovers
Nature: +Sp. Def, -Sp. Atk
Trait: Thick Fat
Rest
Belly Drum
Earthquake
Crunch

Skarmory @ Leftovers
Nature: +Def, -Atk
Trait: Sturdy
Toxic
Roar/Whirlwind
Spikes
Feather Rest

Bronzong @ Leftovers
Nature: +Sp Def, -Atk
Trait: Levitate
Iron Defense
Calm Mind
Psychic
Shadow Ball

Salamence @ Life Orb
Nature: +Atk, -Sp Atk
Trait: Intimidate
Dragon Dance
Dragon Claw
Earthquake
Rock Slide

Garchomp @ Life Orb
Nature: +Atk, -Sp Atk
Trait: Sand Veil
Dragon Claw
Earthquake
Crunch / Brick Break / Poison Jab / Iron Head
Crunch / Brick Break / Poison Jab / Iron Head

Note that either Salamence or Garchomp will be eliminated. They are similar, but I think Garchomp is better. Not sure, though. And I haven't thought about EV spread, but first I'd like it rated. You can still know the strategy of each Pokémon because of its moveset.

 

[Lumine]

looks alrite, this is just my 1 persons opinion
Salamence @ Life Orb
Nature: +Atk, -Sp Atk
Trait: Intimidate
Dragon Dance
Dragon Claw
Earthquake
Crunch

Garchomp @ Life Orb
Nature: +Atk, -Sp Atk
Trait: Sand Veil
Dragon Claw
Earthquake
Brick Break
Crunch

never tried the rest so i dunno

 

[Shiraishi]

..I prefer mence. The only thing good about Garchomp is that he gets STAB earthquake. Nintendo finally made a good ground type besides groudon..(Flygon failed)

 

[Shiny Umbreon]

I thought Garchomp was better because of the variety of its moves. In stats they're almost the same, I think.