Rate My Team Battle Tree Doubles: Kalos Starters

So here's a team I plan to use in Battle Tree's Super Double Battle. It's really just a first attempt at me being remotely competitive, so it's somewhat a style-theme team: the fully evolved Kalos starters plus Aerodactyl because I like Aero. Now, this is just me in the kiddie pool, not swimming in the stormy sea, so I'm not too worried about it being the most incredible team ever, I just want it to not suck. I've already bred each of these Pokémon with the natures and egg moves I want, plus perfect IVs, so I'm not really up for changing the species. Sadly, I also don't have hidden abilities on any of these. Just a limitation I have to work with, my next team will be more perfected.

1: Chesnaught. Adamant, holding Leftovers. EVs focusing on Attack and Special Defense.
Moves: Wood Hammer, Drain Punch, Leech Seed, Spiky Shield.
Also Considering: Gyro Ball, Spikes, Roar, or a whole offensive moveset that allows for the Assault Vest

2: Delphox. Modest, holding Firium Z. EVs focusing on Defense and Special Attack.
Moves: Fire Pledge (or Heat Wave in Multi or Flamethrower in Singles), Psychic, Foul Play, Dazzling Gleam
Also Considering: Shadow Ball, Signal Beam, Grass Knot

3: Greninja: Timid, holding Rocky Helmet (maybe). EVs focusing on Special Attack and Speed
Moves: Water Pledge (or Water Pulse in Multi or Singles), Dark Pulse, Ice Beam, (Toxic?) Spikes
Also Consdiering: Gunk Shot, U-Turn, Extrasensory (can you tell I like flinch-hax?), Hydro Cannon

4: Mega Aerodactyl: Jolly, holding Aerodactylite. EVs focusing on Attack and Speed.
Moves: Pursuit, Rock Slide, Fly, Giga Impact.
Also considering: Element Fangs and Bite, Hone Aqua Tail, Stone Edge

So keeping these pre-bred Pokémon and their lacks of Hidden Abilities in mind, what are your opinions of how this might hold up in Battle Tree Doubles?