My university is creating a Pokemon League, and I've been picked as its Dragon trainer. There are a few restrictions that they are placing on us:

1. No legendaries for the gym leaders and E4/Champ.
2. No Mega-Evolutions for the gym leaders. E4/Champ can use Mega-Evolutions.
3. All Pokemon for the gym leaders and the E4 MUST have their type, in the non-Mega form. So if I turn out to be an E4 member, I can't have Mega Charizard X on my team.

I've compiled this team so far based on these restrictions. Does it seem like a decently strong team? It'll be my first time really getting into competitive battling:

Tyrantrum - Jolly
Item: Focus Sash
Ability: Strong Jaw
EVs: 252 ATK, 252 SPEED, 4 HP
Stealth Rock
Crunch
Dragon Claw/Outrage (if possible bred move)
Stone Edge/Earthquake


Garchomp - Jolly (if E4/Champ, Mega-Evolved)
Item: Choice Band
Ability: Rough Skin
EVs: 4 HP, 252 ATK, 252 SPEED
Earthquake
Stone Edge
Outrage/Dragon Claw
Dragon/Swords Dance


Flygon - Naive
Item: Life Orb/Leftovers
Ability: Levitate
EVs: 252 ATK, 252 SPEED, 4 SPATK
Earthquake
Fire Blast
Toxic
Stone Edge/Crunch


Kingdra - Adamant
Item: Leftovers
Ability: Swift Swim (Sniper is okay)
EVs: 252 SPATK, 252 SPEED, 4 SPDef
Substitute
Dragon Dance
Outrage
Waterfall


Dragalge - Modest
Item: Black Sludge
Ability: Poison something-or-other
EVs: 252 HP, 252 SPATK, 4 DEF
Surf
Dragon Pulse
Sludge Bomb
Thunderbolt


Haxorus - Adamant
Item: Wide Lens
Ability: Mold Breaker
EVs: 252 ATK, 252 SPEED, 4 SPDEF
Earthquake
Dragon/Swords Dance
Iron Tail
Dragon Claw