Game Help: Need help for my team please

[billsevans]

Hello, I need some help deciding which moves to use for my team pls.

Im using the original gen 1 blue to clarify,

Venusaur
-Razor Leaf
-Sleep Powder
-Swords Dance
-Hyper beam

Pikachu
-Thunder Wave
-Thunder Bolt
-Light Screen
-Slam

Pidgeot
-Agility
-Mirrior Move
-Double Edge
-Fly

Flareon
-Fire Blast
-Hyper Beam
-Focus Energy
-Substitute

Hypno
-Hypnosis
-Psychic
-Counter
-Thunder Wave

Gyarados
-Surf
-Thunder Bolt
-Body Slam
-Ice beam

Not sure if these are the best moves to use. I also have one problem which is obtaining TMs, like hyper beam and substitute. How difficult is it to get those TMs from the rocket game corner? And can you get more than one.

And if there are any better options for fire and water than flareon and gyarados. I like pikachu for electric because its a sort of novelty, so I think Ill keep pikachu.

Thanks!