To be a little more constructive then TheBloo, you have a terribly unbalanced team. For newer players, a good format to follow is as follows:
Physical Sweeper or Wall Breaker / Special Sweeper or Wall Breaker / Mixed or Another of the Previous / Special Wall / Physical Wall / Harass or Utility
What you have there is basically three strangely constructed Physical Sweepers / Wall Breakers, 2 Special Sweepers strangely constructed, and very weird mixed 'Zard.
https://forums.pokemmo.eu/index.php?/topic/53984-pokemmo-official-usage-statistics-and-tier-lists/
https://forums.pokemmo.eu/index.php?/topic/55218-ou-viability-thread/
https://forums.pokemmo.eu/index.php?/topic/50959-bushs-ou-tier-competitive-pokemon-guide/
If you are serious about getting into PokeMMO competitions, I seriously recommend you start with at least these three things.
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As far as the Pokemon you have presently listed, here is what I would personally do with them. I don't have a ton of experience with a few of these Pokemon however.
Charizard | Belly Drum, Substitute, Earthquake, Fireblast (Lonely) - Salac Berry
Gengar | Shadow Ball, Sludgebomb, Thunderbolt/Giga Drain, Psychic (Timid) - Lum Berry / Leftovers
Salamance | Rock Slide, Earthquake, Dragon Claw, Superpower (Jolly) - Choice Band
Dragonite | Dragon Dance, Dragon Claw, Earthquake, Wing Attack/Substitute (Adamant) - Lum Berry/ Leftovers
Gardevoir | Psychic, Thunder Bolt, Will o' Wisp, Calm Mind (Timid) Lum Berry - or
Gardevoir | Wish, Psychic, Protect, Thunder Bolt (Calm) Leftovers
Tyranitar | Rock Slide, Crunch, Earthquake, Dragon Dance (Adamant) Leftovers