Help with my Battle Subway Team

Looking to finally go through some of the trains on the Battle Subway. So far, I've put together this team. Any suggestions or team replacements would be greatly appreciated.

I wanted a Modest Hydreigon with Dark Pulse here with 4HP, 252 SpA, 252 Speed, but I'm unable to breed one at the moment...so this is what I'm settling on for this first spot.


Hydreigon (Choice Specs)
Nature: Modest
IVs: 31 | 31 | 31 | 31 | 31 | 31
EVs: 64 HP | 252 SpA | 192 Speed
Move Set
- Draco Meteor
- Dragon Pulse
- Flamethrower
- Focus Blast


Chandelure (Leftovers)
Nature: Timid
IVs: 31 | 31 | 31 | 31 | 31 | 31
EVs: 4 HP | 252 SpA | 252 Speed
Move Set
- Calm Mind
- Fire Blast
- Shadow Ball
- Substitute


Seismitoad (Life Orb)
Nature: Mild
IVs: 31 | 31 | 31 | 31 | 31 | 31
EVs: 132 Atk | 164 SpA | 212 Speed
Move Set
- Surf
- Earthquake
- Grass Knot
- Protect