Looks pretty solid. I don't see any problems with the Pokemon chosen. I'll suggest some movesets to help out:
Charizard
- Flamethrower / Flare Blitz
- Dragon Claw
- Hone Claws / Power-Up Punch
- Roost / Brick Break / Earthquake
Fly or Air Slash can be considered if you don't plan on using its Mega Evolution.
Alakazam
- Psychic
- Focus Blast
- Shadow Ball
- Calm Mind / Charge Beam
Psybeam can replace any of them if you want a high PP STAB movw.
Greninja
- Surf
- Dark Pulse / Night Slash
- Ice Beam
- Water Shuriken (filler)
Aegislash
- Shadow Claw / Shadow Ball
- Iron Head
- Sacred Sword
- Swords Dance / King's Shield
Heliolisk
- Thunderbolt
- Grass Knot
- Focus Blast
- Charge Beam
Goodra
- Dragon Pulse
- Flamethrower / Muddy Water
- Thunderbolt
- Sludge Bomb
A lot of these moves are learned or found rather late in the game, so I only recommend using these movesets as a loose guideline.
Hey awolffromspace!
Thanks for the reply. I will probably go with Fly for Charizard as I need it. Will override it after beating the game if the need be. It is possible to get these Pokemon in the course of the game without deviating too much right?